Question abou ttextures and exporting textures

I been looking at videos about textures lately and I’m now trying that. I thought it would be easy but it’s actually the part I struggle the most with.

I made a building like model and I added a concrete texture to the wall for testing. Now Id like to export that UV map to my computer but every time I do I only get the UVs and not the texture on my png file.

Can anyone tell me what I might be doing wrong here?

My not so fancy model is attached to this message
Concrete-Box.blend (562 KB)

Thanks lot

Your blend file has no textures included. Next time us the File / External Data menu before saving your file.

You can bake your textures to your UV layout using the Redner / Bake options, then just save the baked image file.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Bake