Can I make this as a sheet metal part?

The attached drawing is 2018.  I am designing a part out of bendy plywood (attached part).  I thought I could make the part from sheet metal and flatten it to get the pattern to cut the bendy wood to. 

However, no matter what I do the flat pattern comes out as a rectangle.

Please help me make this from sheet metal and get a flay pattern.

SolidworksSheet Metal