Welding, Chopping & Solid Rivets

Chad got me some stock front fender brackets. I aligned the holes with a drift, centered and tack-welded in place.  Gelner blasted the fender.  I taped a guide - and followed my line with a cut off wheel.  Filed smooth and I'm ready for the solid rivets (if I can get my air chisel in there?).  I have a pic of a Korean War veteran from about 1957 with his hacked up pan for inspiration.