the vehicle is impressive, I'll discuss is small but big on details.
have if I can help, with enamel or acrylic paint ?
I use acrylics from vallejo,in some days I hope to put photos of some figures and explain better
For paint with acrylics we have to consider several things.
The base colour should not be very thick in order to not cover details and we always have to add a part of Tamiya X 21 Flat base to qualify colours always in the clothes or in everything that in reality is matte, we will not use it in human skin, leather, metals.
If we exceded the amoun of X 21 we notice that the colour have rest of withe from the product.
The rises for the light and the shadows are made with a more diluted colour as the basis have ,we get the brush wet and then dry the excess water on some cloth or paper kitchen, we can practise the correct dissolution by dry the brush in a sheet of paper and view how it paints.
Base 876 Brown sand
Lights 815 Flesh tone
Shadows 814 Cadm.umber red
for clothes you can use
Base. 977 Desert yellow or 819 Iraqui sand
Lights 845 Sunny skintone
Shadows 921 English uniform
vallejo's web, are a small tutorials English and French http://www.acrylicosvallejo.com/