I would suggest taking a break from painting for now. Are you tired when you’re painting? Heed Angie’s advice and use a primer if you haven’t already done so. I paint with Genesis so I don’t know about the acrylic paint process but I always use a primer.
She now recommends you wash kit in small Amount baking soda w few drops blue dawn enough water for a paste,brush on w tooth brush, wash off in blue dawn water rinse well. Wait 24 hour put light coat of her vinyl precoat wait 24 hours then you can paint. Did you use her paint guide? Took me a few tries to get it right but really like her paint now. Take a time out then try again