Hi, Im new to Vray, Heres my first rendering, I need HELP!

Hello vray users,

Here is my first vray rendering. Its a work in progress of an exterior shot of a building. I need help in a several things.

1) GLASS: My glass is coming out dark and i do not know if its my material settings or if i need to add more light inside or vray settings.
My glass material is a standard not a vray, maybe thats it?

2) LIGHTING: It seems to me that my lighting looks unreal and i have been playing with many settings and cant achieve anything better. What am i doing wrong?

3)BRUSHED ALUMINUM: MY brushed aluminum sucks i believe, i think its also killing my rendering.

Any CC is accepted as a positive critiscism, be harsh with me if you need to. I need help. Thank you.