Steps to make electricity from fire.
Take the bigger heatsink and spread evenly the Thermal grease using something flat, attach the COLD SIDE of the Peltier Cell to it (the side with the writes on), spread more Thermal paste on the HOT SIDE of the cell, attach the small heatsink to it, I used some heat resistant tubes to protect the wires from the heat and a couple of M3 40mm bolts to fix everything in place, I made a quick test with a propane torch to see if the prototype is working, With a cylindrical Steel can I made the brazier, measure the top heatsink (in my case is 40mm) and cut the shape on the bottom of it using an electrical tool, If everything fit right move on, use a water container to allow the cooling to be more effective than air, pour enough water to cover the sink, but beware of touching the Peltier Cell and start the fire.