Study hard. An instructor told me something once that has stuck with til now. Memorizing the call outs in the sim, V1 cuts, go arounds, etc. is like memorizing the lyrics to a rap song. Repetition is key until you don't even have to think about it. The words just come out automatically.

Your partner is your greatest asset. I can remember times hand flying single engine approaches in the sim, get a little busy and notice the rudder paddle moving by itself. It was my partner adding correction where he saw it was needed.