cheapskate backdrop

 I started with a large generic wallpaper off of google images.

 than i mirrored the image and flipped it.

 i added some clouds, and some darkness.

i boosted the contrast a bit.                                                                                                                        

Then i printed it out, unfortunately my printer made lines on it but i can edit those out.                           

 i set it up in my shop and it looked like this.

 below it is the darker one for smaller minis.

 A before and after editing.

 it works on both.