This is kind of old but below is a speed paint of the zombie spinosaurus so you can see my process. This painting took about 3-4 hours to complete and is still one of my favorite paintings I've done so far. I started by drawing a rough drawing of the composition,pose,and figure that I wanted then I went in and started laying down colors to get a general sense of the tone of the skin and exposed organs. From here I went in and started blocking in the details and finally color corrected the finished painting. Enjoy!