Anyone know what's the cause of this. I thinned it using Vallejo thinner plus a couple drops of flow improver. It just beaded up like oil on water or it pooled up
Acrylicos Vallejo Airbrush Flow Improver
Amazon.com: Vallejo Airbrush Flow Improver 200ml Paint Set, 6.7 Fl Oz (Pack of 1) : Arts, Crafts & Sewing