This is a handmade "remake" of the "Wild Brothers", but burned on cardboard this time. 2010 Burning on cardboard is more difficult than burning on wood, the process is slower, the shades are more difficult to be obtained, just because the cardboard, believe it or not, burns much much slower than wood.
Ciao
Sorry, I wish I could offer more in terms of commentary, but that's about all I got.