This time I'm going to show ya not a dinosaur miniature... but meanwhile it's definitely a miniature dinosaur.
The fragment of the hind limb of a Psittacosaurus sibiricus chick (my first serious attempt at fossil preparation for exposure; not sure if it was a good idea to tint the host rock for contrast). It's about 4,5 sm * 3,5 sm.
And this is how it looked like before:
Tools used: a weak solution of hydrochloric acid and a syringe needle.