To encourage branching, pinch or snip the tip off. With the possibility of further growth at the tip removed, it will push new growth from just above each leaf.

You'll benefit from reading through the thread I'll link you to below. Most common issues associated with Ficus lyrata have been discussed - especially how to get the best results from your pruning efforts. Timing and your tree's level of vitality are important factors, so don't cut yourself short.

http://forums2.gardenweb.com/discussions/1478337/fiddle-leaf-fig-training-pruning?n=141

Al