Due to my buying a stripboard i need to use more space on the board, but first steps ...
Cut the board to the shape of the tin but leave some gap at the front and right side for the LEDS to go.
I used this tutorial on how to make a 5V regulator https://www.instructables.com/id/5v-Regulator/
.... This circuit worked fine with a 9V battery outputting just over 9V to the usb with exactly 5 volts...
I created 2 strips on the board ground & live that way it was easier for me to connect everything
Solder everything into place and you have a USB charger (once you connect a battery).
I positioned the 5v reg to the back of the board that way when everything is in place i can attach it to the tin and use the tin as the heat sink,