Photoshop paint over technique

Above is an example that I did in class of painting over an image in order to give it a different appearance. I think that this is a really effective way of getting together a variety of different colour pallets for one concept, and i'll certainly be using this technique with future projects. 

Anatomy 02 : Muscles study

After just finishing the attack on titan anime series, I found it quite humorous that this project was set, but it was definitely one that I need to work on, as my understanding of the human muscle structure is lacking.