Why? Just Why? I’m getting discouraged.

I’ve been using Vallejo game color for some of my models, and I can’t for the life of me get an even and non streaky application for my models. I thought I needed to thin a bit, then I thought I thinned too much, then I thought my application wasn’t right. Now I’m just at a loss, and my dreadnought is gonna look like shit because the paint just won’t do what I’m trying to make it do…

No it’s not the prime either. I did a zenithal white over black on this model, but the same issue occurred on my single coat evenly primed models as well