Another training idea I just thought of is, when you feel ready, to practice limb walks...on the ground. Practice your throw weight and throwline technique by setting either a basal or canopy anchor into a high up TIP. Then, while on the ground, practice your technique by first moving outward with much of your body weight against the rope, producing a moderate lean in your body. There are some good videos out there which show proper form, so I won't get too into it, but work on releasing your hitch as you move back with one hand and pretend you're using your other hand to navigate the treescrape and using it for balance. Practice moving sideways and with your back turned almost completely toward your TIP to mimic typical body positions you might encounter. Ideally, find a tree that will allow you to practice on gravel or asphalt, because grass is unrealistically slippery (not always, though).
This will also allow you to better calibrate the wrench portion of your rope wrench. It will be tempting to collapse the wrench with your hand, but that is improper form from what I understand (although, I've certainly done it). You want the rope to run through your wrench as you release your hitch in a moderate lean. If the rope isn't running through, you may want to adjust it and open it up a bit. Tiny micro adjustments can make immense differences, so don't feel like you need to move the bollard by much.
Once you've moved outward about 25 feet, then practice pulling yourself in and try to continue to keep as much of your weight on that line as you can. As you get closer in towards the tree, weighting the line will become less important as the limb can then better withstand the forces being applied by your body weight. Practice tending slack with one hand while pretending to, again, use the other hand to grab whatever you can for balance. Obviously there are no branches to grab on the ground, so just use your imagination and keep that hand off the device. There are certainly times when you can use both hands to tend slack and there are exceptions to SOME rules.
If you want to do this exercise in pro mode, then buy an inexpensive and long wooden square beam and set it on the grass and practice moving in and out while balancing on top of it. Buy one that maybe 4" x 4" and you can buy a few ten foot long segments to put in the grass or wherever. You can use them to build branch structures on the ground. So don't think you just have to go straight in and out; use the beams to create shapes that you can follow on your feet, side to side and back and forth. This will greatly improve your balance and allow you to practice on the correct medium at your feet.
I think we all know I'm not a professional, so maybe someone has a better training concept in mind. I just know that this is how I became a proficient limb walker before ever performing one in the canopy. At one point, I even felled a large dead tree out in the woods closeby another tree and then put a canopy anchor high up in the nearby tree and then practiced my footing on the felled dead tree, which added a new dimension to the training: up and down and not just side to side, front and back. Also, it allowed me to practice on the 100% EXACT medium I would witness at height...but only ever a few feet from the ground. This also allowed me to incorporate lanyard training. i could go out and up and around these limbs several feet above the ground and then lanyard into the tips of the limbs, pretend to make a cut using my hand saw, scabbard my saw, undo my lanyard and move around some more. This will allow you to train to equalize yourself using both your climb line and your lanyard via triangulation arrangements.
It's honestly a lot of fun and you need only to go into your local state park or wherever and locate a fallen tree to give this a try if you are so inclined. But definitely the square beam training method is mindless and easy to achieve on a budget. Once again, maybe other people have better ideas, but this worked wonders for my balance and technique and overall safety in the tree.
) visualize how they all go together. 
