Pruning a fiddle leaf fig (ficus lyrata)

Could anyone advise me please on how to get my fig, which is about 5 feet tall with leaves all the way up the stem, to grow into more of a 'tree' shape, with a trunk and branches? Would it work if I just cut the top off? I have seen them in this form (in very large pots) but I don't want to harm it. Any suggestions greatly appreciated!

On plant Ficus lyrata