@Ritual, I have never painted their resin, that was a general statement for resin vs. lead/white metal minis. I\'m glad to learn that & I stand corrected.
Originally posted by Simon123
...i also try to do a lot of fast brush strokes, maybe i should try to put it on area and let dry ?
If you are wet blending, then several layers while the paint is wet is normal. But for layering, you have to let each layer dry first. Latex based paints have a tender period where you actaully peel the lower layer(s) of paint off with the brush instead of applying a new layer. From what you are saying, this could well be the cause of your problem.
I cure this by having several minis on the table at once so that as one is drying, I am working on the next. Not real condusive to GD level painting, but great for tabletop squads.