Using my template, I've been hammering out a lower fender extension. I may end up making and remaking these but I'll get there.....eventually.
Still need to fix the front curve on the fender and extension to match the nose.
If I might make a suggestion. It looks as if the top fold that creates the lip for connecting the top of the extension to the bottom of the fender is folded too short. I would disconnect the two and let the fender drift out to match the nose and tack it to the nose temporarily the flatten out and re bend the upper lip of the extension at a higher point. Depending on how much material you have on that return lip you may have to add a bit of metal to it after you re brake it in order to have enough metal to make a decent connection. Just a suggestion but seeing how you have solved many other issues with the sheet metal you probably have figured this one out already. By the way your decision to use a lexan back window was a wise one. With all of the work you had to do to re shape the window plug you would have a tough time getting a piece of pre made glass to lay down in that opening or for that matter maybe even fit the opening.
Cheers.