Pictures speak a thousand words. My 1st grow I had two bag seeds. Buds turned out dense but just really small. Like my biggest single mug after dry and cure was like 2.5 grams. Now on my 2nd grow I am at week 4 flower and my buds are already double size from my first grow. The difference for me has been, genetics, I got some good beans with the genetics for yielding lots of big buds. I increased veg time by a couple weeks. And finally and probably most importantly, my plants are healthy and have grown vigorously all throughout the grow. My first grow, I had a major nitrogen deficiency in early flower that was not fixable. Plants finished but yield suffered, I didn't experience the "bulking up" that the buds do throughout flower and near the end.