chemie,

You can use an additive for latex called Floetrol. It is available at the same place you can get the paint. Floetrol is made to smooth out brush strokes. I've had good luck using a foam brush instead of bristles. You might want to thin the latex a little with water, but it doesn't take much for brushing. (50/50 for spraying). Try to apply the paint with very few brush strokes. Let it flow out. Too many brush strokes and the paint will smear. Don't try to cover in one coat. The paint is thick and may run if you put it on too thick. Two coats minimum, maybe three. I think Lowe's is offering a small sample size now (Valspar brand). Just the right amount for your need. Saves having to buy a quart and only use a tablespoon full.