Skill helps, but is gained thru interest and trial. Again I preach patience. I'm not one with many years of body experience. It is possible if you just go slow and work imperfections out slowly. Anyone (almost) can do these things slowly, speed comes with time. Be prepared to do things more than once if at first the results are not adequate. Bring dents out slowly, very slowly. You have to work them out, not irradicate them in one swing. Dollys and hammers are fairly harmless in novis hands. Heating body panels takes a little more skill and should only be used when the metal has stretched and keeps flexing in and out of being true. Keep torches away from roofs and large arched body panels such as hoods as those take some practice. Flat ones heated slowly and carefully and tapped lightly while cooling keeping a damp shop rag around for final cooling is fairly safe.
I might suggest anyone with interest practicing on something first. Take a hammer to a unusable body panel such as a replaced door or something laying around the yard and practice on it. Put some dents in, then take them out, and ultimately shrink stretched metal if necessary with a torch last.
I believe any of this info can be found on the net if not on this site and I would advise a quick "proceedure" reading prior to attempting it, but don't be intimidated either. Just plan on it taking as long as it takes!
