Ok I think my biggest concern. Would be does welding both sides on something thin mess it up. But I guess I'm only working about blowing through or warping

Ok guys, I am lower than a beginner welder and have a question I can't seem to get googled. I got my hands on a Vulcan 170 from harbor freight. I am restoring a classic mini and replacing some panels. The majority of my welds are plug welds but have some panels patches to weld in that will be covere...