Warhammer: Tyranid Termagants

I bought a £6 box of Tyranid Termagrants for my son. I only had the starter pack of paints for Space Marines and that didn't come with a white primer paint so I used the skull white paint watered down as a primer and it didn't turn out that great. I'm relatively happy with my paint job but I had to mix a lot of the colours myself. Here is the result on my first Termagrant.

I'm using my iPhone camera to take the picture and not my good camera, which would show better detail. It gives you the idea anyway.