Dab it on with a brush, I put about a good drop on a decal, then brush dab for a few seconds,I dont use decal fix, always used a PVA mixed with a drop of water, this pulls the decal tight as it dries, then I leave overnight and then use the decal softner.......but sometimes the PVA mix can do a fantastic job of pulling it in, and a decal softner is not always needed.