re: Help please. I'd really like to try cake painting.

OMGosh Calli! Wonderful detailed answer. I love your work and will have to come back and study your reply, in detail.
I am yet to try cocoa butter, but it is on my list of “things to do”.
Karen, I have mainly used progel colours mixed with vodka. I just love their range of colours. Other than that, my inspiration just comes from canvas artists that I recognise and love.
No training or classes (although they are also on my “to do list”)!
Have a crack at it! You will love it!