Oo yes, I do like that! I may do the same. I've been toying with the idea of a couple of snowballs on the ground, but it's all mental at this stage rather than actually trying anything out (and I suspect the designer already thought of that and couldn't get it to work).
Yours is a fabulous block - hope mine turns out as well as that. I'm hoping to get to it this weekend, so we'll see what happens...