Awesome post and I have done all of theabove when I didn't know better too..and when I did know better, but still did it.

1.Dressing too warm on the way to my stand location not bringing clothesto avoidgettin sweaty and cold..a big no no. Not dressing appropriately and then being too cold to handle the hunt
2. Only hunting early am andlate pm and not hunting mid day during the prerut peack rut and post rut. The best times to be on stand I have discovered is a lot of times mid day or mid am.
3. Not improvising and makinga known good location work because of not using my imagination and makin it work.
4. Dumbest mistake I ever used to make was thinking I could just spray myself down with some scent spray and get away with the wind not in my favor perfectly. You can't fool a whitetails nose. I don't use any cover sprays or lure scents anymore.
5. Poor stand selection location and not being able to read how deer are going to move through a given area