AMD quarter panel question

I’m waiting on my full size AMD quarter panels to arrive for my 73 Dart Sport. Never done metal work on a car but have welded and fabricated in the past. I’m giving it a whirl though. Any advice would be appreciated.

The fit for the Duster & Dart Sport panels are a little trickier that the Swingers and Scamps. Check your door alignment with he original panel first. Check the hinges and pins. Measure and write it down. I use a taylor's tape as the quarter is a big curve in every direction. The gap along the rocker is usually the largest. Check the vertical lip into the doorjamb. Sometimes the stamping slips and the flange bottoms out on the jam at the striker pin, makes the quarter stick out too far. The rocker section of the AMD under the jam might need to be trimmed. The top of the quarter at the quarter window by the jamb might pull the jamb corner back, making the gap big. Measure the old one & write it all down.