Here's some pics of the first map piece. I had exactly the right amount of wall pieces, counting my test piece which I glued into one end (the green topped wall piece) Both the inner and outer corners of the L had to be made up blockish small objects glued together. I put some decorations in front of those parts so it looked a bit better.
I thought I had enough blocks to do the corner, but turns out I didn't... So I put a small 'maintenance console' into the inner corner of the corridor :)