I've added several more layers to the top stripe and am happy that it now looks to have quite a lot of depth. I've left the bottom purely coloured pencil so hopefully you can see the difference. I've also started adding layers of acrylic to his head, the top part is finished as I don't think I will improve it by adding any more paint. I do find it difficult sometimes to know when to stop before I create mud.
At this stage he does look quite flat so I'll do some work on giving him some shape next.