I've also made these without handles as a heavy duty lampshade, and from smaller cans too, you can adapt this to your own needs.
Step 1: Materials...
A length of 5 amp twin core electrical cable.
A Lamp holder.
A standard 3 pin mains plug. (3 amp fused). Dependant on you home country
A 6" piece of wood. (brush handle or in this case old curtain pole).
A couple of woodscrews.
Step 2: Tools...
Drill bits, Step drill/Hole saw if you have either.
Nail or centre punch.
Step 3: Warning!
2 - When cutting and working tin it is safer to wear gloves and eye protection.
Step 4: Mark the centre
you can just use a ruler to measure or using dividers work from four opposite sides
until you find the point where all lines cross.
Mark it using a centre punch or a nail, this makes it easier to drill.
Step 5: Drill
You can drill a ring of holes around the inside of a 30mm circle then cut it with
tin snips or strong scissors, or a hole saw or step drill if you have one, then tidy the
edges with a file.
Step 6: Make the handle
good, if it is round cut a flat 30 - 40mm long in one end - I used a rotary tool to also
cut a curved groove for the edge of the can to sit in so it is a more secure fit.
Mark the position of the handle on the bottom of the can, and drill two 3mm holes to
take screws, and screw the handle in place.