The first pic is kind of fun because you get to see what us float-painters have to deal with all too often.... cracking float cloth! Imagine trying to paint any straight line on this broken surface. This is why float-painters opt for brushes with long, soft bristles, ideally synthetic. They hold up to our abuse fairly well yet also handle the lumps and bumps like a champ. They replace the cloth in small panels on an "as needed" basis. Honestly, new cloth has its own obstacles. They don't sand it after priming so it sucks in the paint while having the texture of sand-paper.