It's very clear that here you tried to recreate the sonic adventure style in the proportioning and pose which i imagine is also inspired by a sonic adventure render. The shoes, legs, body and head are very well made but the arms and gloves need a lot of work. The hand behind the body is backwards and the one in front of it is very weirdly proportioned. Hands are something i also struggle with so i understand why these mistakes happen, i'd recommend watching some tutorial vids on youtube on how to draw hands. The arm behind the body is mostly okay, the front one follows a kinda weird arc. The last thing i wanna mention is that arms in sonic characters usually start thin and get thicker as it gets near the hand.
Hope these little critiques help ya :D!