It's possible that you may have jumped the gun just a bit in training such a young plant, but yeah, that's one way of doing it. Bending, or arching like you've done here is an excellent simple way of getting plants to fill out. This technique is a great way to get more bang from a single plant but it doesn't lend itself well to small areas like grow tents or other cramped quarters. If you have the room when new branches develop you can bend them as well creating room for more branches. You're on your way. Have fun.