MG-FIAT
M - Missed Approach Instructions
G - Gyro slaved to whiskey compass
F - Frequencies, Got the right approach plate (airport and runway), verify freqs tuned in appropriate radios
I - In Bound heading dialed in
A - MDA/DH Altitude
T - Timing
I do this (outloud) multiple times, touching the plate or instrument as I go. Do it at least once prior to commencing the approach and then again (and again) whenever not doing anything - i.e. being vectored to the approach gate.
GUMP at the FAF, regardless if the wheels move or not
G - Gas on fullest tank, Boost pump on
U - undercarriage down
M - mixture rich
P - prop full forward
Good Luck - let us know how it goes. I find throwing up (not near or on the DPE) sometime prior to the checkride helps
