I was wondering about that. I have made a shadow box and a color checker, so I think I will try to paint the pairs from life first. I do think, though, that I will photograph the set up and then have it enlarged and try it that way. I've looked at some of what Mark says about painting from a photo. I think he advises enlarging the photo to the size you want it to be when you paint it. Is that what you do? Where do you have it enlarged, online or at a store? I have an old camera and my phone to take photos with and I suppose either will work.
Thank you for your encouragement.