sheet metal flange align

I'm lost on how to get the flange to meet or at least come close to perpendicular wall. https://cad.onshape.com/documents/a06e51a396299611fc85368b/w/d7213e7937d6c4f60d66e3db/e/a785adeb3ec4f767493dc68f Also, I am unable to find any examples using the "up to entity" or "up to entity with offset" selections. Thanks, Steve.

Mitered flanges work great. However, I have a requirement for mitered flanges on a box lid with 1" flanges on the sides and .75" flanges on the ends. I can't get this to work - any ideas? https://cad.onshape.com/documents/3c01b79b9c00933e8893369e/w/e1bbc1e9354923acfcb2035e/e/2710d0965c63bc4f1e7a8716

Hi I'm teaching my students how to use the Sheet Metal features of Onshape and they are going great.... but ... We are stuck trying to produce simple overlapping corner joints that would be spot welded or riveted etc. (see: a simple SM box picture found on the internet to help explain)

Can anyone tell me how to make the last flange on this angular box? It seems I can't make a flange on the edge I used as the flange bend direction reference? https://cad.onshape.com/documents/d1b9963ad64a7b1695794ffd/w/269836c8da5474873c0f2fd6/e/63868f9d6f14b5d523dd9047