Denise,
This is very appealing to me. The frosty look gives it a cold, wintry feel. I enjoy looking at bare trees against the sky, especially at twilight when they're reduced to graphical forms - the fractal patterns of the branches can keep my eyes engaged for a long time. The texture you've retained in the bark of the larger branches adds further interest. I like the composition, with the "L" of the larger vertical and horizontal branches framing the diagonal one.