Some good ones mentioned here. I've learned some of these the hard way.

IF YOU WEAR A FACE MASK WHILE HUNTING, PRACTICE WITH IT....... that cost me a 15 yd shot on a P&Y, couldn't find my anchor........

KNOW WHAT TO DO AFTER THE SHOT.... NEVER GET IN A HURRY........that cost me a 140 class 8pt that I single lunged and jumped from his bed........ I should have waited........

TAKE THE FIRST GOOD SHOT OPPORTUNITY A MATURE BUCK GIVES YOU........that cost me a nice 120 class 8pt, I passed the 20yds shot hoping he would get a little closer, didn't happen..........

HIGHER IS NOT NECESSARILY BETTER

PERSIMMON TREES ARE A GUARANTEED KILL IN MY AREA