This will ideally be made as different Sheet Metal Flat Patterns.
Are you looking to create this from one sheet ?
Chris,,, You could have used your 3d sketch to create surfaces, knit, then thicken. I first did it that way but was not able to convert to sheet metal mostly due to curvature of the front faces. I quickly gave up on that (been there before) and used a sheet metal base, miter, and edge flanges. Then cleaned things up a bit between unfolds and folds in order the get the corners to come together nicely. There is way too much explanation required for what I did and why. Since I don't know the thickness or bend radius I came up with my own and started the base then moved faces in order to compensate for thickness and BR. What really makes this work though are the miter flanges. You can unhide your 3d sketch and see that it matches up to the model. I'm also assuming you wanted some sort of flat pattern and were going to fab this conventionally.
SM Part_db.SLDPRT.zip 347.4 KB