Dont take it to hard, your learning, second time in the circuit!! Give yourself a break.
What you could do is use that last lesson to see what you could have done better? De-brief
Maybe draw a plan of the circuit and mark in all the key points ie turn,R/T, power settings (roughly) and then build on that.
Go over your checks to become more familiar with them (if you need to)
I know its only human nature not to cock up but it happens, your instructor has probably seen it all before.
Just use your lesson points to help you learn. If found it best to write stuff down.
Enjoy.