Here is a very easy method I recently discovered:
It consists of 1 Basecoat, 1 Wash and 1 Highlight, and gives you a nice shaded white finish.
Essential preparation:
1. Get some matte medium (from Michaels, any art store or online).
Mix Nuln Oil (Badab Black) half-n-half with matte medium.
Add a bit of water (preferably with some Flow Improver). A few drops (8-12) will do, if you mix in the Nuln Oil pot.
Keep in mind that matte medium is white BUT it dries clear.
This preparation might seem overwhelming to some, but it makes AAAALLLLL the difference.
You might think; "Oh, man. Matte Medium? That is like for Pros! I really don't paint enough to warrant that".
Shut up!
Just trust me and get it. You will not regret it at all.
2. Get
GWs Ceramite White base paint.
3. Get Vallejo Model Air White.
Painting:
Basecoat with
GWs Ceramite White.
Here we are making the best use of the coverage that the
GW Base paint provides.
This coat doesn't have to be perfect. Just be as neat as you can be bothered to be. Some streaking is ok.
If you are painting the entire (or the majority) of the model white you can just spray a white basecoat on.
Wash with your Nuln Oil/Matte Medium mix.
Because we have mixed with Matte Medium it doesn't taint the model as much and it flows a lot better.
The amount of wash you need......I can't tell you. You really need to try it on a model and see.
The wash will look white and kinda pale, but it will dry black.
Don't let the wash gather on large flat areas (it will make your work a LOT easier later). Just run the brush over the area one more time to move it a bit.
Highlight with the Vallejo Model Air White.
Here we are making use of the qualities that Vallejo Model Air provides.
Since this is a paint made for airbrush use it is thin, but with the same intensity of colour that we are used to.
Now you highlight the white leaving the shaded areas untouched.
Do not slopper this white on. As the paint is rather thin it tends to run all over. Just put a little bit on your brush and highlight.
Start with the extreme edges, and cover more and more until you like the result.
Thats it.
TL;DR: A way to paint nice white in 1 basecoat, 1 wash and 1 highlight that you didn't read? Ok.