I've done the same sort of mock ups and found lots of images of blank bottles just by googling it. For personal use, this isn't the worst crime but I wouldn't suggest copying these images and publishing it. They aren't aren't psd files of course but they'll open up in photoshop just fine.
As...
I'm in the same boat as Rob. I have basic starter kit but want to start doing AG brewing. I just got a 10 gal kettle with false bottom as a gift. Should I use this as the brew kettle or the mash tun? I can't afford to upgrade much more right now (Christmas is expensive!)