LuciferN~
To get the canopy as such I had a long veg time, like 6-8 weeks, can't really remember, with a plant that has really bushy characteristics.
I took the clone and rooted it in a jiffy cube and once it rooted I put it in its pot you see today. The screen is eight inches from the top of the soil so when the plant got about 6 inches I topped the plant to promote side growth. Once the side shoots started growing well I topped them with the FIM technique, seeming I am new to it all I think I only had three successful FIM tops out of 12 attempts. Practice makes perfect.
Then it was time to sit back and let mother nature do its work. I would let it grow for a week and see the branch tips rise up through the canopy. I would then take the branch tips and pull them through the next screen hole making sure they were even and distributed through out the screen. You really need to plan on how the plant is going the grow, where it is going to be dense or sparse, and how many budsites per screen hole(I'd say 3-6 at most or if it is a cola try for only 2 per screen hole). If you can't tame a branch using the screen only, use plastic coated twist ties to hold it to the screen.
One thing that I did that some might shun me for is fan leaf removal. I removed around 10% of the fan leaves which obstructed light from budding sites around 3 weeks before flower. I also removed all vegetative growth from under the screen 4 weeks before flower to put all the plants energy into the growth above the screen. I tried not to prune in flowering as I hear that it will diminish yield and vigorous growth.
If in flowering and you see fan leaves blocking budsites, get those fan leaves out of the way! Try pulling or tucking them under the screen. The best part of a SCROG is that it is so hands on. It is really fun making the plant do what you want it to do.
After you send it into flower you will want to do one more taming session after the plants "stretch". Expose as many bud sites as you can to direct light by pulling fan leafs under the screen and arrange buds evenly. It took me around an hour and a half to do my final tame.
Hope that answers your question Lucifer!