growing the scrog method you will grow seriously fat buds. that said, i think the biggest newbie mistake is sticking every single node in a square and not ging the colas enough room. if you are doing this outside you can have a rather large screen so give each cola some room. i grow mostly indoor so i to make sure each cola is going to have at the very least 5 inches in diameter of room just for itself, basically about every third hole on the screen. as far as sticking every node in a space, fuck the little shit. you want the canopy to grow even so look at the branches and if something is significantly smaller cut it out. it will eventually just be in the shadows anyway and wont produce shit so cut it out and let the other buds have more room and grow fatter. as far as building one even if you have the smallest amount of craftiness i imagine you could build one.