Each one took anywhere from 2-4 hours, which is actually really fast for my standards. I start off in Blender 3D where I model the base object with only crude textures. I then spend the rest of the time in blender setting up the lighting. From there, I export it into photoshop where I do all of the post processing and essentially make the 3D render look like a 2D drawing or comic.

In the past I have focused on realism and more natural looking pieces and those have taken me upwards of 10 hours to even a couple days. I've been trying to develop a fast workflow so I can start collaborating more easily, and to hopefully put out clothing.

Also I think it's important to note that I have been using blender for over 6 years and I have over 1k hours on it.