How to repair wall damage

The key to making those ugly old walls look new again is to repair them all with drywall compound.  First off you will need three different putty knifes , usually a 1 inch , for small spots, a 4 inch for most spots, and a 10 -12 inch for large spots. You will need some all purpose drywall compound(filler) , not spackle or any other type light weight filler.  Put some filler on your large knife and use your 4 inch knife to scrape some off and apply to the wall, you should spread the filler over the area on the wall that has an imperfection, then clean your knife off and start smoothing it out  by pulling all the excess filler off the wall. This is not easy to explain on paper, the key here is to hardly have any filler on the wall for the first coat, there should not really be any ridges what so ever. The filler will dry quickly , within a few hours, after apply a second coat. The second coat will really grab onto the first  and will allow it to be much smoother. After that has dried , use a fine to medium sponge sander and start sanding in a circular motion from the outside of the patch to the inside, make sure that there are no ridges on the outside, use your hand to feel the surface.  

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