I was taught BMCFHCE which equated to Brakes (off), Mixture (rich), Carb heat (on), Fuel (quantity in tanke selected ok? and fuel pump on), Harness (secure?), Carb heat (off), Engine (t's & p's ok?).
I took me ages to get the right order fixed in my head and the mnymonic that worked for me was remembering a "British Motor Company Fixed Head Coupe, with an Engine".
Don't worry about going solo asap - it sounds as if you're doing splendidly so far. As for nerves, a bit of nerves is good for the concerntration....