Here is a link to my experiences in getting fenders to work on my car:
https://www.cabriolet.piklefactory.com/front_fender.htm
The thing the got me in the end was most of it was not the need of lots of tools, but thinking it all through with a proper understanding of metal movememt.
What really changed my view of metal work was when I understand what it ment to shrink metal and when metal is shrunk. From there I was able to start making huge progress in what amount to advanced metal work. But in reality it is not so advanced, just applying correct knowledge. The real issue is the amount if incorrect knowledge out there that really screws you up.
If you have a lot of metal work you want to do I cant tell you how much better life is with a decent TIG welder. They can be pricey but there are some decent lower cost units out there that will let you get the job done. If you are older and cant see close anymore get cheaters, magnifying glasses, for your helmet.
Enjoy.