 Then I would apply the fiberglass tape, which is like a mesh. It's sort of sticky. You lay it on top of the crack. And then you follow that up with about three very thin coats of spackle. If you put too much spackle, it's going to get gloppy and nasty. So the less, the better. About three very thin coats of spackle will cover that. You do a little sanding in between. Then you have to prime it. You have to use a primer. Otherwise, the paint's not going to look right. And then you do some touch-up paint. You might end up having to repaint a bigger area than just the crack to make it all blend in nicely.