Yeah, It's pretty good for being your first try, WillBill. Don't worry about it. I'm sure you'll get better and better with time. Also, you could try looking at some spriting tutorials if you want help with it.
I did try a couple of my own (recolors just like the others; I do that too) - now with this tail issue, I may have to redo them, but I will show you all what they look like for now anyway:

I like the sand-colored ruff better (it's easier to see, and besides, gray is a rock color, not a ground color), but... meh.
Anyway, I like the pointy tail better for some reason. Seems to fit better.
EDIT: Also, I can redo it with that jumping sprite, if I can get it, if you want...