Nope.
Sand the entire thing first with a 320/600 gr paper.
Then use putty to fill the holes. At first the holes won't get totally covered since the air that gets trapped between the putty and the bottom of the hole just won't make it work. So, give it a first try. Sand it again and the putty again. Or you can use some bondo, but since bondo usually gives you little holes anyways, I'd say go with two runs of putty. After you've covered the holes, sand the entire tihng again, with 600 gr paper and under the water in order to make it as smooth as possible.
After that apply the first coat of SPRAY FILLER. Let it dry for at least 15 minutes. Sand it again with 600 gr and water. If the result is good to you, no holes or scratching on site, you can then apply the first coats of paint or you can go with the primer if it's only a primer and not a primer-filler.
That would be it.
I'm sure other guys here have bigger experteese, but this method usually cuts it for me
