Remember a target is one thing.....a live deer is another! If your new to archery.....(first season) practice, practice and then some more! Before season, find out your limits and stick with it the whole season! Right now it sounds like you should have a 20 hunting limit. I've hunted for over 25 years, and my limit (sometimes its hard) is 30 yards even though I practice 40 and 50. Hunting is quite a differant story then shooting 3D targets, but its the best practice. Practice, practice and then practice somemore and you'll have a great first season!

Good Luck!