Help with flattening a part

Hi Solidworks users!

This is my first post to the forum, so if I have got the thread wrong I am sorry!

I am creating a relatively large sheet metal assembly, however I am having trouble converting to sheet metal and or flattening a part.

I have included the features used so far, (It was drawn in context within the assembly and I separated the part into 3 different sections. However the 3 sections are all drawn in the exact same way.

So if anyone has the answer, or any ideas for me to try out, that would be greatly appreciated!

Adam!

SolidworksSheet Metal