This enter painting was done using one set of filters -- the distort filters, and various size brushes and different brush strokes.
The trees were made with the brush tool, using 50% white fill, 100% grey, blue or green stroke. Once the shape was drawn, I applied the chalk and sponge distort filter effect.
The newly-formed ice is made with a gradient of the same color as the water, just a darker shade, to which I applied the horizontal motion blur distort filter effect.
I used a brush to draw the shadows across the snow and then applied the torn edges distort filter effect.