I've filled a redline for you. ^^ I may have gone overboard writing though... those were the things I'd observed that came to mind while I worked, I hope you find them helpful! To be honest, I think you are very close to reaching intermediate. You have a very solid wolf here, I only caught small and easily adjusted edits to suggest. xD
I may not be famous but try doodling for a minutes-it might help u get used to drawing on the computer and don't worry, your drawing is better than mine. i mean, if look at my gallery and compare it to yours, yours is WAAAAY better