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From fcueto@rice.edu:
No description, no points.
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From dbn_3@yahoo.com:
The sky doesn't look like snow clouds.  Vary the cacti so they each look a little different -- rotate them, put the arms in different places on the trunk.

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From jyrehby@hotmail.com:
This looks like an assignment. Cactuses are duplicated, the sky texture is poor, the snow stops short of the bottom of the picture (it is snow, isn't it?). A bit of explanation in the text file wouldn't harm.