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.