I came across a template in Photoshop for those who like to see how the wallpaper will look in landscape, portrait and as lock screen and background for apps.



You can download the template here:
Intridea Blog: iPad Wallpaper Template for Photoshop

Good luck!

I love the wallpaper you have displayed there. Very nice.

Get the original in this post:
http://www.ipadforums.net/ipad-wallpapers/2612-my-wallpapers.html

Hey, thanks for that Numb, I have been looking for the "easy button"

i made this ipad mockup, which has the icons and a transparent background, so you can try out your wallpapers on your PC. I still need to go back and finish up the edges, but i'm too lazy right now

http://img541.imageshack.us/img541/5549/guidei.png

Good idea! - You can always just create your wallpaper in 1024x1024 resolution. Either way always make sure that your most important content is in the middle. That way whichever way you spin your ipad, you'll see what matters most

Here's another template:

Thanks, will use it right away.

The real trouble is that the wallpaper is usually covered with random garish icons which detract from it's impact.
It's just not as important as it's desktop cousin.

i have seen many of you provide before, but really thanks, really nice wallpaper here...i will send these perfect pictures to my ipad friends...ahha

Thanks Dale. The link to the PSD in NumbLock's opening post no longer works so I'll try yours.

If you want a PSD file, try this or this.