Could someone check my phase 45 vero please?

[demonstar]

I've laid out the phase 45 on stripboard. Can anybody see any faults with it please?


The schematic is at tonepad...

"http://www.tonepad.com/getFile.asp?id=70"

It's hard to see all the parts list so here it is...
Project: Phase 45
Credits: Circuit by tonepad/ layout by R. Moody

C10: 0.01uF
C11: 10uF
C1: 0.047uF
C2: 0.01uF
C3: 0.047uF
C4: 10uF
C5: 0.047uF
C6: 10uF
C7: 0.01uF
C8: 0.047uF
C9: 0.01uF
D1: 4.7v zener
IC1: TL072
IC2: Tl072
Q1: J201
Q2: J201
R10: 10K
R11: 150K
R12: 20K
R13: 470K
R14: 10K
R15: 10K
R16: 10K
R17: 470K
R18: 10K
R19: 1M
R1: 10K
R20: 150K
R21: 7.5K
R22: 3.9M
R23: 150K
R24: 150K
R25: 150K
R2: 470K
R3: 10K
R4: 10K
R5: 10K
R6: 10K
R7: 10K
R8: 10K
R9: 10K
VR1: 250K

I'm still a newb so theres probably bad practices all over the place.

Thanks in advance.