If you want to decrease the size you can download my Tumblr Resizer for Photoshop Here.
To Download the Backgrounds just click on the image you want , Right click and Save As.
Preview opens at 1680x1050.
Make sure you change the following line in your Tumblr Custom HTML: top left fixed repeat to this top left fixed no-repeat.
If you need help with adding a background Follow this link.
As Always, they are free for you to Download

.jpg)
.jpg)
.jpg)
.jpg)
.jpg)
.jpg)
.jpg)















.jpg)






.jpg)
.jpg)
.jpg)
.jpg)
.jpg)
.jpg)


.jpg)
.jpg)
.jpg)
.jpg)
.jpg)
.jpg)
.jpg)


