Thanks very much for your appreciation.
Talking about scale, probably people interprete differently since LEGO MF is a "cute" version (not to proportion to a true human figure, head big, body wide...)
But for model building, we commonly count the "overall size" as the basic count. The most significant dimension for counting the overall size for a MF seems to be the easiest height .
so I count the size of a human figure in LEGO with that (MF height = human height, about 1.8m ~ 2m tall)
All my MOC follows this abovesaid scale.
E.g. my MOC AT-ST is about 4 MF height (8~9m tall) in LEGO world, which matches what Star Wars did. Otherwise if we base on head size of MF, I am afraid it may looks odd (too big) when we put it in a scene with Hoth base and AT-AT together.
Anyway this abovesaid about scale is my explanation about my own interpretation, hope not offence anyone.
Anyway thanks again.