Hey Caitlin!
I'll be your reviewer this afternoon!

Now, for the piece...
The day was kind of blah for me. Just an ordinary field trip, nothing special.
Never mind, that was a lie. It was nothing far from the worst day of my life.
First of all, this is not the best way to catch the readers interest. I'm sure you've heard this before (as we all do...over. And over. And over.

) but it's really important to
show rather than
tell the reader. When you announce that it was "the worst day of my life" it doesn't make the reader sympathize. Instead give us emotions and memories that show it was the worst day. It is very tempting to "talk" with the reader, but in most cases it's ineffective.
Also, using "blah" as a description kind of threw me off. I think it was to establish the character's tone (you in this case

) but it comes off much like a diary. Though if that's what you were going for, then well done!
A bad feeling clawed at my inner organs as we,
Good description.
my three rather strange accomplices and myself,
This is another place where it would be more effective to show us rather than tell. How are your accomplices strange? Do they wear bizarre clothing? Do they have odd habits? Explain.
...waited for the museum's one-and-lonely elevator to arrive on the second of two floors. My claustrophobic senses sent me warnings as Jimmy, my large and boisterous friend, stepped across the threshold into the tiny four-foot by four-foot space. I strode in after Edward and Renee.
Oddly enough, though I've been telling you to show us more, this is a little too much description all in one place. When there is an adjective or description following each noun it becomes tedious to read and hard to absorb. Sometimes the best thing would be to cut some out. For example: “My claustrophobic sense sent me warnings as Jimmy, my large friend, stepped across the threshold into the tiny space.” See? Much easier to read this way.
Would suck to be stuck in this hell hole.
Fragment. *It* would suck…
Dark wood paneling, the bane of my existence,
*Is confused* I would either expand on this or leave it out.
Dark wood paneling, the bane of my existence, lined the walls, clashing with the chartreuse tile floors and fluorescent lighting.
An easier way to do description like this would be to involve one description with another. For example, “The chartreuse tile on the floor reflected fluorescent lights onto the dark wood paneling that lined the walls.”
Make sense?
Renee punched her finger once on the "main floor" button
No quotes needed unless the button actually said main floor on it.
we patiently waited for the elevator to move downward, calmly chatting as Jimmy danced around.
You already established with “patiently” that you were all “calm” while chatting.

Also, the Jimmy dancing part doesn’t really fit in with this sentence. Maybe you could separate it and elaborate? Like, “…we patiently waited for the elevator to move downward while we chatted. In one corner Jimmy did a [descriptive word: frantic, silly, small] dance,[another action: ignoring the rest of us].
"Ya know, you really shouldn't be doing that sort of thing, Jimmy.
Moving? Or dancing? If this is what you specifically said then that’s fine…but it would make more sense to be clearer.
realize my one worst nightmare.
Change realize to something else… Perform, execute, carry out… etc. Realize doesn’t make sense here.
Renee and Edward chided at
You can’t really chide *at* something.

It would be “Renee and Edward chided me for my supposedly childish fear.”
"I TOLD YOU!" I gasped through my hysterical screams.
First, caps usually indicate yelling/screaming and you say that you’re gasping. And also, generally caps are frowned upon in writing.
Use italics to emphasize! 
"Okay! Okay. Now just stop freaking out. It'll all be okay," Jimmy tried to calm me.
From what he’s saying we know he’s trying to calm you. You don’t really need anything there.
"I CAN'T! I'M FREAKIN' CLAUSTROPHOBIC!" I revealed in a shrike.
In a shriek, I think you mean. Also, watch the caps again.
Now I do admit, I went over the edge when I started yelling at the lady on the help line.
Show us when that happens or get rid of this line. When you put in one-liners like this it’s like you’re teasing the reader with a tantalizing story and then not telling us! *frowns disapprovingly*
Ten minutes passed by balled up in a corner, waiting for help.
The minutes passed by waiting for help? I don’t think that’s what you meant. I think you could clarify at bit.
That ugly wood paneling was really just plastic, which was fairly obvious.
Unless you had described the surrounding area or the wood itself in-depth before (which you haven’t so far…) it wouldn’t be obvious to the audience.
I rated it as "cliché".
*Is confused* …why?
the high octave
Spelling!
Thirty more minutes passed by as they struggled to rescue us from the lift, when they finally pried the doors open enough for us to step back to the second floor.
Something here needs to change…it just doesn’t make sense how it is right now…I think the first half of the sentence should be one in itself, but then the second sentence needs to change as well. Maybe you change the first couple words to “Finally they pried the doors..”
I felt my head take a nervous spin as I gasped for oxygen. Freedom from the enclosed space felt better than anything.
Very abrupt ending.
Overall: Cute! Funny story! Your friends sound like people I know… Parts of this need some work grammatically (watch the fragments!) but most of it is very well done.
To keep in mind!:
The readers don’t know you or your friends. We need information! Are you tall, short, blonde, skinny, nasally? We don’t need to know it all (or all at once! Preferably not, actually…) but some description will help us shade in our ideas of the characters. Also, it doesn’t all need to be narrative description. The way the characters talk to each other (we saw some of this) says a lot about their relationships. Give us more interaction!
Showing v. Telling. This is difficult because sometimes telling is necessary…but for the most part, keep to showing. Reader’s don’t like to take the author’s word for it. They want to see the ugliness of the elevator. They want to hear the grinding sound of the elevator.
Great work, Caitlin!
I’d like to see more from you!
-Maggie (Your teammate!

)