Ok, here's a crude and quick sketch. Left side is section, right side is top view.
Example is windscreen. You've jammed the tip, cut very small, 1/8" diameter max, into the gap between the body and seal. Almost to the base. About 30-45 degrees of angle from perpendicular, you want the goop to go "down" as well as back...
Lean the upper part of the nozzle in the direction of motion, "pulling" the bead. As you squeeze, the goop will backfill behind the tip, working it down and into the groove, and oozing up behind the tip. Watch that for when it comes up to a common level, I like the first pass about 1/8" or so below the seal, but it will vary. As you hit voids the fill rate will change so work VERY slowly and watch the bead to keep moving, not some standard set rate of motion.
It gets a bit tricky around the clips, but the initial 1" bead at the base provides some base seal, and work slowly around them and you can get a good seal.
After you do pass 1, press it in with a finger. The second layer can just go over the top, no need to stick the nozzle back in, and you can cut a slightly larger tip to fill it faster for the "top coat".
Hopefully this makes more sense.