You should now have a height and a circumference measurement. If you are using a standard turkey pan, you will divide your circumference measurement by 2 and cut out two rectangles. Both with the measured height and half the circumference.
Next, take your hole punch and punch out ventilation holes along one of the long edges of each rectangle.
You will need to mark a location to put the bicycle spokes. The spokes should be positioned about 1″ above the soda can stove, so measure the height of your stove and mark out the height + 1″ on your aluminum rectangles.