Stress training

Use only LST & limited defoliation. No need to LST until at least day 21. Your goal should be to get as many "tops" as you can at an even height. So you will need to tie down the main shoot so the lower ones can catch up. Repeat until you have an even canopy. Fishing string works well for me. Hope this helps, good luck.

The only stress training you should ever do with an autoflower is LST (low stress training) ... What I usually do is to wait until they're a decent height with a number of branches and then tie a strip of soft cloth on them and gently pull them down affixing it to your pot (you may have to poke or drill holes in your pot to allow this) so they're pulling out and away from the main stem. This will result in the standard "Christmas Tree" shape (which a lot of people think is not good enough - but it is)... Others will tell you to start pulling the entire stem down right now - but that's fairly risky unless you're pretty careful about it - the nodes and bud sites that your plant has right now are pretty close together and you don't want to squash them in any way... Read up on the different methods of LST and pick one you feel comfortable with... it's a good thing to do and will increase your yield... Good luck!