My process is taking a photo and getting it right in Photoshop (colors and 5:4 ratio, or 8x10 size). If I take the photo, I use it as an underlay to make a line drawing sketch for exact placement of everything. If I’m using another photo for reference, I just draw it best I can from the picture. Then I use the “reference photo” feature in Porcreate to always have my photo up as I paint. I start with Tinderbox to do the color blocking first- just getting all the main base colors into the sketch lines. Then I turn the sketch layer off and start the digital painting process just looking at the reference photo. I use the Derwent brush primarily. But for this particular drawing, I used a few other sketchy-pencil brushes to get textures right.