Hey not bad but what beowolf666 and BlackKitsunes42 said music would help this out. Regarding a tablet to use I suggest saving whatever money you can and buy a wacom bamboo tablet. I use a bamboo fun for my computer. Also you don't need to make it sound like this is the worst you ever done due to limitations. All you need to do is put up your best work and see where it goes from there. One last thing did not mean to make it lengthy check out Draw with Jazza he can show you how to animate even though it is with adobe. I still think you should check him out.

Advice: If you want good review take your time and edit your work, don't just rush and throw crappy stuff out because you didn't take the time to edit, people on newgrounds are patient. We take quality over quantity any day. Review: Has potential, the animation works, If you can I would suggest adding background music.