^that's a bit extreme don't you think?
i wouldn't go as far as to say it "sucks" but i will provide some critique.
i'm ot sure how you made this (tablet, mouse, etc), but the lineart needs work. make your lines as fluid as possible and really focus on anatomy. if the anatomy is correct, just the lineart a little choppy, a lot of imperfections can be overlooked.
as stated, the tail isn't attached. i'm not sure why it isn't, but it really should be. extend the line from the left (our left) edge of the tail down to connect it to the body.
finally the proportions are a bit off. the "hat" is a little small height wise and the legs are quite stiff and thick. really study the official art, if you really want to duplicate it.
good job so far, just keep working on it.