You show stripboard, not perfboard. The strips of copper are easily cut with a drill bit at a vacant hole, not between holes which you show.
You show the top view of the IC so the strips are cut in a mirror image on the other side. The parts and some jumper wires are on the side without copper. The copper strips, cut strips and solder are on the other side.
You have the LEDs in series instead of back-to-back like on the schematic and you have the LEDs shorted by strips of copper on the circuit board.
I agree that the 10 ohm resistor is in the wrong place. It should connect from the 0.047uF capacitor directly to pin 4 of the IC.
I agree that there should be 4 cuts under the IC so that pin 1 does not short to pin 8, pin 2 does not short to pin 7 etc.
The copper strips at pin 1 and pin 8 should be cut so that the entire copper strip is not a transmitting or receiving antenna.
The volume control should be logarithmic (audio taper) not linear.