Build Your Own Clone Message Board

Hey guys, I ordered the wah pedal and built it for a school project and I finished it and it does not work. I've retraced my steps and re soldered some bad solders other than that I'm sure I did everything else correctly. My professor helped me trace the signal, but we ran out of time and I don't have the equipment or I'd do it myself to make sure nothing wrong with the signal flow. What are other troubleshooting things that I could do to try to get my wah working. Also when I first tried it I think I heard something pop, could that have been one of my components?

Thanks, Jamicka

can you post of the circuit board [ both sides], switch and jacks? it's never good to hear a popping noise when it comes to electronic.