I think the larger slabs need a bit more definition, have been adding bits that jut out a bit to make it more rugged and less of a flat surface (looks good from looking up from the base), which have helped break up the large flat surface, but not sure how much of that I can get away with... there is some grooving and so on in there, but it's been partially killed by the flash... I also scored the 3rd 25mm layer into two layers for a bit more variety, but again, that's barely visible...it certainly won't be any higher than that, as that's the depth of the paper box it will be stored in, allowing for the base and the rock/dirt/grass transitional layer on the top...
