I'll take a few photos today for you. I run them to the left instead, to wire into the fuse box in front of your left knee. This avoids anything except getting it under the headliner and sliding it under the a pillar and door frame trim, then finding some hole to poke it through once the wire is...
I have soft plastic trim pullers that get pretty sharp towards the end to slide under stuff. For this I only use them to pry the trim or rubber back a bit at a time and tuck the wire. Modern headliners can just have the wire shoved up in there by hand. I usually manage to get the a pillar...