I really like this a lot. Welcome to passions. Might I suggest some possible breaks in the poem though, perhaps something like this:

It tumbled from a cloud
rolled over and over
and out of it's nest,
floating to the earth
in so much dark, yet illuminous.
  
Landed in a tree, top of a hill,
in colorful dreams
of soaring slept
into the morning
until something broke the chill.
  
Snowflake, special,
different from all the rest
and when you love what your doing
that's when you'll do your best.
  
With just enough light to see,
it listens to a distant sound
and caught a glimpse of the ocean
before the sun
helped it to the ground.

Now that drop stumbled
into a swift moving stream
like a tobogan, flume a rollercoaster
such an ultimate adventure
one wild and crazy screaming stream.
  
Snowflake, special,
different from all the rest
and when you love what your doing
that's when you'll do your best.
  
Finally flows into a river wide,
slow, bold and free,
heard so much about the ocean,
learned so much, met so many,
there's just so much love in the sea.