This one is a little crinkled. You can use a putty knife or old playing card to work out the wrinkles I just was sloppy I guess? It will work wrinkles and all just not as pretty as it could be.
I used the copper foil glass workers use to solder stained glass with to make my solder points. I mounted all the transistors on little insulated islands and then added the grounded components. The +Vcc being on the bottom foil I just drilled holes sized to the wire and the used a 1/8" drill to drill through the foil on top. this allows the leads to pass through without shorting. The little amp is a good one. I would think you could use any JFET available to you. The biasing may vary a little but the worst case would call for adjusting the source resistor.
I used pasta maker manhatten pads to mount the transistors.
If you don't have the board for the pads you can make them using copper foil or old tin can strips laminated to craft paper. Just use what's on hand and some imagination.