I love this picture! I love the facial expressions and body language, I love the lighting and the setting, and the "Spirit Summoning for Dummies" pamphlet. I especially love the textures of the picture, though. I like how the spirit seems like your hand would pass through it, while the summoner seems so solid, and how the background is just detailed enough that you're reassured that it really would be there if you pushed the shadows back a bit more.
I understand that this is a commission, but thank you for sharing it.