... Just Do It!
I just kind of followed what people mentioned here on the QB and then went at it with a piece of print with butterflies, flowers, ferns and all sorts of greenery on it.
Think of it as FMQing that gives you all sorts of permission to colour and go back and forth having fun!
On your tulle thread, I suggested you check out
MaryKatherine and gave you some links .... check about the thread painting too.
Also, check out
CatPatches.
She uses thread painting to finish off and pull it all together for her Pawrtraits.
https://catpatches.blogspot.com/