Walls of walls are a very large number of species and methods, ranging from naked brick, to ready -made wallpaper, or other options.
Consider some types. The walls can be initially plastered, or put on the profile, or poke drywall. It is possible if there is a need to glue (insulate) with a special foam, there are different sizes of thickness and types of foam, then fill the mesh with a stapler, whip, glue drywall, put up and glue wallpaper. It is possible if the budget is not enough for everything together, a plastered polystyrene foam, putty and glue wallpaper without drywall, but with this use the walls will be deformed when impact, more than a plasterboard plus.
