help please

[samples45]

Hey guys i have a 1955 2nd gen. im working on the firewall area. im not sure that you call it a " drip rail" but right above that is a seam that is overlaped and runs all the way across.. its just spot welded on from the factory..i was wondering whats the best way to smooth that out? i dont like it and its a eye sore to me.. do i just weld the seam and smooth it out? to me if i did that wouldnt the overlaped seam just keep receding up? if someone could maybe post a picture or tell me how to weld overlaped seams that would be great! thanks

cameron