I like your style it´s very naturally and fits the theme. It looks kinda unfinished but detailed at the same time. Seems like a mix of Avatar Pocahontas & disneys atlantis, very cool and exactly my taste. What are those bird ghosts? I´d really like to know that
I browsed through the process, and felt the values were a lot stronger back when you had the summoner as a dark shape against a light background. Now you have a light background with a light figure in front, with light spirits going around him - not a very compelling visual hierarchy. I really like the city in the background though, that's beautiful.