The third effort for my snowman finally worked out:

Flew around a bit - looking for snow - and it worked again, that from seeing something white - I was able to transform the landscape a bit in the difference into a winter-scene with thick snow lying on the ground.
No need to let it snow.
On the way - twice a DC wanted to lure me into doing something else - but I told them, I had no time.
Then I tried to transform into an arctic wolf.
The only thing I managed was feeling white hair growing from my body everywhere - and that took ages - somehow I gave up - thinking - common - December almost through - do at least that snowman.

And I did - a small one - maybe 40 cm all in all - but from real snow, and this time I had some stones and branches for a face and it looked nice and friendly.
Then I animated it - that was quite easy - I just pretended it was a dancing decoration snowman already - and it started dancing - it had two snow-ball feet (not from me..) and hopped from one to the other to a melody which he somehow caused himself.