The best prosciutto for this elegant dish is the delicate "Prosciutto di Parma". A great play of sweet and salty. Serve with slices of fresh Italian bread.

Have the prosciutto sliced razor thin.
Alternate thin slices of cantaloupe with the prosciutto.
Alternatively, serve with fresh, ripe cold figs.
For a buffet dinner or cocktail party, wrap the melon with the prosciutto in bite size pieces, sticking a toothpick in each piece for easy handling.
Or simply place the wedges of melon on individual plates and drape the melon over them.
Have a pepper grater on hand as some like a few flecks of pepper on it.