Hi Jesicastudio,
I am strongly considering your entry #20. I'm not sure if you ever seen anyone exhale vapor after taking a puff on an e-cig. The vapor comes out in a plume of white cloud. I would like to see something that resembles this cloud of white vapor inside the big blue drop in your design. Not too much but just enough to make out that it is a plume of white vapor. Here is an example of what it looks like...
http://youtu.be/wlmKfuDZVs0Please let me know if you can do something like this.
Thanks,
--Robert