you could take shooting classes, but if you want to hunt this season you could do a couple of things that i have found to help me shoot better, this one seems dumb but i wasnt doing it, always make sure that you are anchoring at the same spot everytime, if you shoot with a release easily pull the trigger as if you were shooting a rifle and after you pull the release hold the bow in the same spot, because i realized that as soon as i pulled the release i was moving my bow which didnt give me accurate groupings i fixed these issues actully over last weekend, now at 10 yards which is as much as i can shoot at my house i am getting min. 1/2-1/4 groupings or sometimes they are touching, hope this helps.
mike