Looks like a good repair, and you won't have any problems with water in the seam!
If you have compressed air, a cheap punch and flange tool will set the patch flush with the rest of the body panel.
This won't work everywhere but can be very helpful keeping the lines straight.
A few companies (Eastwood?) that offer a pair of locking pliers with jaws that will joggle the panel too, but these are painfully slow .
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.