Hey Run!
First of all i wanna say that ScrOGing is a great tecnique but it a very time consuming one too.
Bit don't ever give up, i it is not that complicated in the end..
First of all i have to say that you did a great job preparing your plants π
Second thing i have to tell you is; you probably should get another "screen" with more and smaller squares. I use a WebIt (secret garden). I would even suggest to get two trellis nets, it can come handy to have a second one, i always use two, for support reasons and it also makes it easier to organize everything.
If you dont wanna spend money you could divide the squares of your net in four using some rope.
Don't wait for your plants to reach the net, pull the net down to canopy height and start spreading the branches of your plants. When you have done that you could take off a few fanleaves and lower growth (lolipopping) - its alwatlys good to keep it clean down there, you wont get nice buds from the spindly growth down there also you encourage air circulation by cleaning them up..
Maybe you wanna check out my latest diary "Tropicanna Banana ScrOG #1" it will surely be helpful, sometimes a picture is worth more than words..
Hope that was helpful..
Good luck π with your grow mate! βοΈ