At work, I had been working on a lot of UI elements that were flat and minimalistic. So I thought to bring that style over and create a design that would create an overall cohesive set of posters.
Once I had a plan it became only a matter of implementing the style. I sketched out each character in Photoshop using as much or as little detail as I thought I needed. Then, I began to create more basic shapes out of the sketch. When the basics were done, saved the image and opened it in illustrator as a template. Then all I had left to do was create and fill paths, add some texture, and a title or two. I have to say I was quite pleased with the outcome.
You can see some of the steps for each character below.
Jak and Daxter
Luna, Spirit Breaker, and Bloodseeker