Here is Oscar putting the finishing touches on our small can wall which surrounds the planter cell (for recycling grey water). Just beyond him you can see the gaping opening which will become a wall in the next few lines. Here's how...First, make a little foundation and put your timber frame (for the window in this case) in place.
Then start laying cans with insulation board in between...
Keep laying on the outside too.
Now render the outside with cement or whatever you want (we use cement for waterproofing the outside and mud on the inside because it's beautiful).
Ready to be painted. No shot yet of mud inside but I'll get there. I promise it looks really nice.