Snow is "ordered" --it consists of millions of perfectly formed 6-sided crystals-- yet it forms from disordered water vapor.
Does it do that "by itself"? That is a philosophical question. It certainly does so according to the laws of nature.
Personally, I believe that God is the ultimate author of the laws of nature. But I don't believe that He sits down and carves each snowflake. I think He created a universe with natural laws and knew that those laws would be sufficient to accomplish His purposes. I therefore see no conflict between my belief in God and my acceptance of the overwhelming evidence for evolution.
Certainly God would not be distracted by wasting all His time carving snowflakes ~ which might well explain why they are all different (except for the 2 featured in Science News last year that looked to be identical).