You are going have a hard time finding someone to fix the weld in the last picture. It needs to be cut out completely and rewelded. Then there will likely be a lot of panel missing to weld it back together.
Don't despair, we all tend to learn the hard way, especially when welding body panels which people will see. I have made some nightmarish messes when I started out. Now, I have elevated myself up to "bad dream" status. Those kind of welds are easier for a skilled body and paint man to properly fix without completely starting over.
