Can you paint acrylic on clear?

My brother just painted clear coat. Now he tried to paint acrylic paint on some details and it wont go on. Anyone know why this could be?

Thanks
Frank

Painted over the clear...like for window trim? On all my models, I do the trim last and I use nothing but acrylics and have never had a problem. Have you tried shaking the paint up, or stirring it with a toothpick?

Painted over the clear...like for window trim? On all my models, I do the trim last and I use nothing but acrylics and have never had a problem. Have you tried shaking the paint up, or stirring it with a toothpick?

i got no idea what my brother did, if you say it works ill tell him to keep trying!! its for the engine bay, i think the washer bottle or something. ill let him know though and make sure its mixed properly...thanx for the reply

Paint the area with clear flat before painting the acrylic, it will give it some tooth to stick to. And it may take a couple few coats of acrylic, let it dry fully between coats. Or just use an enamel... - Mark