I have the impression material used to make footprints of my daughter and am thrilled. The (negative) marks to the ground became very good and on the impressions (filled with relief ground) you can even see the lines of the skin! In the mix I needed more water than indicated but it shows when mixing itself well. In order to make the negative impression, however, you need help, alone it does not work :-) We made with the 500g bag 4 footprints and it still powder left.