I think BobCo hit the nail on the head, when he said " not take any shot for granted" .

About 3 years ago I started a new system. I perform a strengthening program year round, and add some arm pulls about 1 month before season. Two weeks prior to season I' ll shoot 20 arrows a day for those 2 weeks, groups of 5 at 10, 20, 25 and 30 yards---focusing on each arrow.

The first week of the season, I throw on the broadheads and limit myself to 3 arrows a day, concentrating on each arrow. The second week it' s down to one arrow, one shot. That' s really all that counts, as I' ve only had an opportunity at a second shot, and that was on a second deer.

Notes:
1) I can' t stand to go hunting until October 01, as I find it too warm for afternoon hunts and therefore use the first two weeks of the season as practice.
2) I' ve had the same bow for 8 years, so I know how it shoots and that everything is in tune. Should need very little practice if you (a) don' t change yourself physically or (2) drastically change your setup. This year I switched from Muzzy to Magnus, with no difference in flight.
3) This is the third week of the season, and I' m good to go

S&R