Mona Lisa from Michaels or Museum brand from an art store. I tried the low odor from hardware stores and Walmart and they didn’t seem to mix as well with the paint.
What I did - in the very beginning when I asked for help is I cut and pasted hints into a document. Then I had it to reference as I went along.
And I read one of the hints here already - TAKE YOUR TIME. I finished my very first baby in 11 hours. He was blotchy and terrible. Now a baby takes me a week to paint because I find its best to paint a bit…do something else and come back to it with fresh eyes. Otherwise I end up with over-blushed, over mottled baby.