Specifically, the question would be for a halfling bard whose main combat role I want to have is ranged with the bow—as no one else seems to be taking any interest there. More interested in accuracy than sheer damage, but damage would be nice, too. So far the character has as relevant stats: 18 Dex, Point Blank Shot, and Deadly Aim.
Someone has actually done an entire How-to guide for pathfinder bards, with an entire section on bow specialists. I would suggest giving it a read-through, and then if you're still having problems check back here for potential solutions.
Check out this link for a complete build guide for a optimized pathfinder bard archer http://www.optibuilds.com/pathfinder-optimized-bard-build-archer-god