1. Keep leaving the fuel caps off, then spent hours after landing walking up and down the strip looking for it.
2 Taking off from 21 at Perth the other day wind is 210 at 18k, push power in then get a sudden gust from the right as I start to roll, what do I do? What I always do on take off, Right Rudder ! The plane shoots right at 45 degrees onto the grass, I get airborne and square it up as best I can and thank The Lord that 21 has a dip at the start and can't be seen from the clubhouse or tower.
3. Complete brain freeze when approaching airfields trying to work out how to join the overhead.
4. Always forget after TO to move the fuel selector from both to left or right, then wonder why after 30 minutes the left tank is empty and right is 3/4
Too many more to list !!!!
Oh one more, always, always leave the sectional chart behind the backseat so I can't reach it when I need it.