2-sided plane: bottom image flipped? I created a 2-sided plane with an image on each side but the bottom image is flipped. 



I saw on another forum that the mirroring the second set of uvs could fix this but I'm new to using uvs in Blender and I'm not really sure what they mean by this. I only see one set of uvs when I went to the uv editor. How would you flip the uvs on the second set? 

Blend file (with answer's 1st method fix):
Three possibilities (at least) :

Modifying the scale in the texture panel

Setting the texture (of color2) X scale to -1 will flip the image horizontally.



Adding a vector mapping node

The same principle, but set up in the material nodes :



Adding a second UV map


Create a second UV map in the properties panel using the '+' button (1) and eventually rename it
Unwrap in that new UV map and scale it -1 along X using S+X+-1 (in 2)
Add UV map nodes in the material (3)