First Ever Vector

Decided to try my hand (mouse) at vectoring and did this one as my first: Twilight looking back

Let me know what problems there are and any tips to fix them. I know a few parts are a bit rough but I couldn't get them the way I wanted (the tail mostly and a few strokes on the body). Eyes gave me some trouble too, but still let me know what else could be improved and I'll give it a shot next time. Thanks.

Also: Thank you OrangeL for your tutorials as I followed them to pull this off.

EDIT: Since someone asked, here's the .png version. If you want the actual file, ask me again and I'll try to get it up.