Profi tip- if the branch is just below canopy, reaching into the top 1/3 of the plant then leave the branch as a flowering site, removing any big leaves blocking light to it or airflow around it. A little light filtering through just some leaf tips, or small leaves adjacent to it is green light that will encourage that area to grow stem. It will be in the top prime zone fairly quickly and be a productive bud site. You just dont want it totally shaded by big fan leaves. Or if its not at least half way/top third (your preference), then it can be removed. The point of defoliation is to remove what will cause problems or a negative. You have to think that defoliation is for leaves and not buds/flowers. You dont want to de-bud a flowering site. Thats not really the goal of defoliation. You want to preserve as many flowering sites as you can in prime canopy space. The lower third, those aren't going to get enough light to make the realky goid potent buds, just remove that. Some plants its the lower half, or even bottom 2/3rds of the plant because of variables like plant growth form or environment/equipment/situation. Focus on leaving some nice big light catcher fan leaves around the top where they are effective, kerp the bottoms free and clean, and make sure airflow and light availability is good around each flowering site by removing folliage, leaves mainly. Then look from the top down, if there is too much crowding, taking away a few side branches away is needed. Have a fan blow down onto the canopy, use your hand to feel, eyes to watch leaf movements that airflow penetrates down to soil level in all areas even corners/back wall. This defoliation avoids creating humid microclimates where mold, mildew, even bugs can find a welcome place to establish themselves. You want space between and around the buds, but also keep them off the walls too. Concentrate defoliation for leaves, and move those bud sites where you need them in the trellis, or use some gardening wire to pull them to where you want them. You can do it, you got this!