I can relate… If it is worth doing, it must be done 100% right, first try, zero margin for error, no rehearsals, no practise round.
Like rocket science!
(Except I know that’s not how rocket science is done, either, but somehow that thought refuses to sink in)
So do it all out 100%, submit that as a draft, and be amazed that your 100% can get even better after some input from others. It’s unrealistic to think you’ll get something perfect on the first try. Only now about 3 years into my job am I starting to learn this. I look back now on some of my early work I thought was 100% now and realize how short sighted I was