perfect practice makes perfect. you gotta know the right things to practice and make sure your practice is constructive!
this is lookin really sweet, pspmad. you got awesome details into this piece and i instantly recognized this as snake. sometimes when you get caught up in the details tho, you lose sight of the big picture. like was already pointed out, the proportions on the legs are a little long. also, compare both the arms you drew. the left one (snake's right arm) is a lot longer than the other.
so maybe next time before going into work out the details, make a super rough sketch and take a step back. look to see that the arms and legs and everything works spacially and proportionately. it'll make your stuff just all that more badass and solid!
can't wait for your next drawing!