the base is watery premixed filler... spread thin and keep dabbing/prodding it - that seems to thicken it up a little bit so you can get some slight undulations in it... when it dires out, you have you overall texture from the undulations and ridges you put in and a nice grainy finish... perfect for concrete in my mind
the litter was green Rizla paper... for the smaller burger wrapper I painted some thin red lines on some Rizla, cut a reasonable sized square out and scrunched... the chip paper was a larger square of plain Rizla... again scrunched into a loose ball and then flatted into contact with some glue (bit of pva - some is needed inside the paper to keep it flat), bit of white paint on the raised surfaces, bit of red and brown GW wash for stains... that easy
the can was lucky, rolled and section of Rizla to the right thickness, glued the final edge with pva, and then when dry cut out a can lengthed section.... press the middle down with a cocktail stick and bend and press down both ends with the flat of your scalpel... when flattened it seemed to stay in shape ok and was just glued down...
