I'm also in nursing school. Although, it has been a while since my check off for head to toe, I will try to help. I remember to do the head to toe in sections.
I check the eyes right when I walk in and then I go to
Cardio: listen to the heart, check pulses, capillary refill etc.
Lungs: listen to breath sounds, watch for chest excursion, etc.
Skin: note color, warmth, skin turgor, mucous membranes
Muscular: push pulls, hand grips, ROM
GI: bowel sounds in all 4, abdomen tender, distended, last BM?
Genitourinary: voids, color, etc.
It just takes a little time to get your system down.