Q: do you write down your melodies before performing them or just do it from memory?
A: yes, in my opinion, when you write it is extremely important to document it exactly, because you've only just heard the thing for the first time today, so that means as soon as you hear another song or another thing, you WILL forget the details of how it went. and then you will try to guess, and even if you guess right, you won't be totally sure that's how it was supposed to go, and it ruins your confidence