Well I just finished sculpting the first Harook mini for Mad Robot Miniatures.
The idea was to sculpt this bird like Scifi creature for 15mm warfare and that it should be some mm taller than a regular 15mm man.
Sculpting in 15mm has different limitations than sculpting in 28mm, for one proportions get to be a bit more cartoony and you should avoid isolated and very thin parts because of casting. So the thin and sharp things like feathers or spikes are not as prominent and they would be in 28mm... Nevertheless I'm quite OK with the amount of small details I managed to add to this tiny mini without making it over the top.
I think this is faithful to the creature concept art and also enjoyable enough for the painter to have little fun with 15mm's, as such I'm happy with the compromises that had to be made to the design in order to convert it to 15mm.
With the concept cleared and sculpted now I can concentrate on sculpting 9 more poses... wish me luck.