acorns painted-Place acorns on foil-lined cookie sheet and bake at 170* for 2 hrs. Use acrylic craft paints and a paint brush to paint your acorns. Brush strokes will make a difference in the acorns’ appearance so brush with the grain of the nut. I didn’t remove my caps in order to paint them. A few caps had fallen off, and I used hot glue to re-attach them. I found the acorns much easier to paint with caps intact.