You can't. Latex paint must be leveled before, otherwise it will fall off.

You can do it again, the thickness of the patch should be controlled within 3 mm, and the protruding part can be polished down hard. Where it is too concave (within 1 cm), you can scrape off the putty layer and fill it with gypsum, and then fill it when the putty is dry.

Putty (filled with mud) is a decorative material for wall leveling, a thick slurry coating and an essential product before painting. Apply it on the primer or directly on the object to remove the uneven surface of the coated object. It is made of a small amount of paint base, additives, a large amount of fillers and a proper amount of color pigments. The main pigments used are iron red, carbon black and chrome yellow. The fillers are mainly heavy calcium carbonate and talcum powder. It can fill the local depression on the working surface or scrape off the whole surface, and usually it is coated on the surface of the primer layer after it is dried. It is required to have good adhesion and no crack during baking. Generally, putty can be divided into water-resistant putty, 82 1 putty and glue-mixing putty.