"Clear Prop!"  
If you can't remember to "Clear the Propeller Area" before starting your engine - what else could you be forgetting!

Collision Avoidance (I.e., pre-scanning an area before maneuvering into a direction of airspace is an ABSOLUTE requirement) - so keep your head turning, your eyes scanning and be constantly aware for aircraft & obstacles!  And let the Examiner know that you are scanning, “tell them” – don’t let them guess about it!  Heck, as far as they know, you could just have a ‘crook’ in your neck.

Rushing a Take-off.  
Relative to PPC's, there is never, NEVER a need for an Emergency Take-off.  Hence, you should ALWAYS have time to get a L.O.C. (Lines are free and clear of debris; all the cells are Open and the canopy is Centered) during your preflight take-off roll - before the wheels ever leave the ground, OR if you down have a L.O.C., then shut-it down (i.e., abort the take-off). [Note: That includes a L.O.C. on Touch & Goes too!  Hence a PPC never does a T&G, it always does a TTG – a Touch, TAXI (checking for a L.O.C.) and Go!

Density Altitude - The 4H “kids” Club is good club, but the 3 H's are bad – very bad when relative to flying conditions (Heat, Height & Humidity).  Please thoroughly understand these 3 factors that induce a high Density Altitude.  And know how these factors have a negative performance affect on your PPC.  Also be informed as to the huge effect the weight of a passenger can have relative to your PPC’s aerodynamic performance.

Weather – Know the weather conditions that can have relevance to potential turbulence conditions for our relatively fragile PPC.

Canopy UN-twisting – You have got to be able to explain how you know that the canopy is layout correctly or if it is twisted!  And please know – without hesitation; please know how to correct the canopy, if it is twisted.

Emergency Procedures

Endorsements -know what logbook endorsements are required