Imprint in the clay

[ldotchopz]

I think for the imprint you could use VDB

like in this tutorial.
 
https://www.youtube.com/watch?v=Jj76rn07D9c
 
you would subtract the imprint. like he is subtracting the wavey line in the middle


for the dust particles use a seperate tyflow

birth > position icon 

Use a wind force to produce a burst of air or something to cheat the particles into looking the same as the video.

The particles in the video are very fine, i've never tried to do particles so small before.

hope that helps