I see what your saying, I was just surprised it was about a 1/4 inch thick. It does not even look like they tried to pound out the dents, just filled it in. I'll be the first to say I don't know body work
You say you want to do your own bodywork. Goal is to keep filler to the thickness of a nickel or less. (if possible)
I didn't know much about bodywork less than 2 years ago.
While
I would never claim to be an expert, I stayed determined to learn and figure it out. Think I've done pretty good so far. Highs and lows are almost all gone now. Once I feel its the best I can get it to; I'll take it in for final blocking and paint in a booth. Probably the best choice for yourself also.
What I'm gettting at: If I could learn it, you can too or anyone can. Bodywork isn't some kind of Voodoo magic. Seems alot of people get intimidated by it assuming they'll screw it up.
Can be a dirty job but someone's gotta do it. So just go do it!
My resources were here, some other car forums, Autobody101.com, YouTube, and a couple of friends with better experience than I.
Do you have most of the necessities?
Compressor
air tools
Sanding stuff
Body hammers
dollies
Paint spray guns
There's alot probably I haven't listed.