After building pedals from this site for a couple of years I thought that I'd try my hand at drawing my own layout. I found the schematic for Dylan159s "Violets are Blues" and drew it up. After double checking and testing bits on breadboard I built up the pedal and not only does it work but it sounds pretty good too.
i'm sure that someone with more experience could reduce the size of the board but hey it's not huge and will easily fit into a 1590B.