Help with mitering flanges

I have a rather simple bracket and guard assembly that I was able to model to the best I could figure out. I would like to close up the corner between the top sloped flange of the guard and the side flanges. I would like them to come together like the corners of the base bracket. Just wondering if anyone else could get this closer than I could. I don't generally work a lot with sheet metal so I figured there would be others that had better ideas.

Thanks for any help.

Matt

SolidworksSheet Metal