Thanks a lot! Here's another example my weathering paint style. I hopefully this will help.
I always paint as base coat main color.

I add light tones first. Main color thinned with white. In this case i used RLM 76 + %25 white. For second layer i add midtones. I used some light gray and blue tones. Last layer is dark tones. I used dark gray for this.

For blending all layers; i paint with very thinned (%5 paint) main color overall.

Cheers!
Rahmi