My OC redesigned (Kind of sketch)

If it looks VERY crappy it's because I made it with the mouse (I don't have my tablet in this moment :c )
In what it changed it ?
-Not alicorn just unicorn
-Other kind of mane style
-Now he walk in 2 legs (Why?, Why not ¯\_(ツ)_/¯ ? )
-Cutie mark
-Tie
-Made in flash xd
(Pleas tell me how I can improve it that will help me so much)