The overall color of leaves will vary from strain to strain and even from plant to plant within a single strain. The glossiness or shine of the leaves also varies.

The bottom leaves will turn yellow over time. I never really cut em but instead give them a little flick with my fingers every few days until they are dead and just fall off.

I'm interpetting what you call "bushy" as nice and close nodes, but you could also mean width of the plant. "Bushyness" is a factor of light and genetics...which I'm just learning now. Use proper spectrum for the stage and keep your lights as close as possible to the tops and also have lights on the side and then you can say you've done almost all you can to make them bushy. Well maybe there's something else you can do but that advice will have to come from someone else. From the looks of your pics it looks like the nodes are nice and tight so I would say you've done pretty well with the light.
If you want wider plants then top them off next time