Brad, patch is looking good. Before scribing onto your fender for trimming, make that top right sharp 90 corner a radius, it will help to eliminate some weld distortion..
Welding into a tight corner allows the shrinking effects to "stack up" from the two welds where you'll get a pucker in the corner that is difficult to remove. A radius helps to balance the shrinking effects across both sides of the weld for an easier task of planishing.
