First, get some sleep. Come back tomorrow, after breakfast and a cup of coffee, with fresh eyes and a clear head.
After that, begin debugging. Verify all the parts are what you think they are (check datasheet to verify transistor pinout, make sure you're reading the color codes on the resistors correctly, etc), if all checks out good, then apply power. Check with a meter to be sure that Ground is at 0V, and the positive power line is at +9V.
Next, check to be sure the guitar shield is at and signal wires go to the right places. Same goes for the amp shield/signal wires.
Now hook up the amp. Still bad? Turn the amp off, check voltages, and report back.