It does need to be resized, since that would make it easier to view, but I was able to see some detail.
It's actually a pretty good picture. It reminds me of Peanuts and Calvin and Hobbs, that kind of child's manga series. Why don't you continue to work with it, sharpening your lines just a little bit, and adding a little bit more color? Like barely-visible pastels that are just enough to depict some kind of dimension? And build off of it. I understand art as the more you work it, the more perfect it becomes.
Great job for "a doodle",
"Neglect not the gift that is in thee, which was given thee by prophecy, with the laying on of the hands of the presbytery." Timothy 4:14 KJV