Mahvin,
I got it figured out.
I got a bit confused so it seems in the naming system when you mentioned name the brush .twig I did it for the file name also.
I went back to rename the brushes I made so they all are in one place when I did that and took the .twig and changed it to lm_twig they came up as I was refreshing my brushes.
Anyways I did not have to change the file extension and now I know how to name files compared to descriptions with my brushes.
Thanks Mahvin for the cool tutorial I will post my snowperson when I finish.
Liana