Looks like we're back in the 90's!
mmmm... no
contact text isn't aligned with the others text's buttons [1], and home and download button isn't aligned with the other 2 buttons [2], buttons background is aligned with main text background [3], footer background isn't well aligned with background of buttons [4].
Later you could have put a better background than a black bg, maybe something like a stars bg or something.
The structure of main text reveals too much moon at the right than left [5], so you could extend a bit more and finally the space between footer and main bg and the space between main bg and the buttons isn't the same, and right and left spaces aren't the same [6].
But for the first time is pretty nice, you will improve your skills just skilling so don't desist, also you could see some tutorials for learn some tips
Just are a small details that breake the harmony of the layout
use a ruler menz :3
Basically, get the rulers out by turning them on, then to get the blue lines click and drag in the ruler onto the canvas, horizontal lines come from the top ruler, vertical from the left ruler.
To remove them use the moving tool, and just drag them back into the ruler
Pretty sure when you have rulers, layers will snap too if you drag them close enough
Or you could just press CTRL + R
I don't know, I actually like it dispite how plain and old style it looks Nice job though xD
I see that everybody is helpful here, so let me be too!
As you can see your home text is not centered with the button below it. To center them each other, select text layer and button layer (crtl+left click) then choose move tool(v) and then in the top panel you will have few icons like align verticaly etc.
Btw. bevel&emboss sucks At least in default way.