I have been modeling for about 4mths l brush painting everything I can't afford airbrush and compressor.my problem is I'm using tamyia acrylics and no matter what I do when I paint large areas I end up with brush marks I've tried x20a thinner I've tried tamyia retarder nothing seems work what am I doing wrong tried mixing paint thinner 1 drop retarder 50/50 tried 70/30 nothing works ready to give up. Please help also I use red Sable brushes
Thank you