Personal, Unique Emoticon
I suggest to have a emoticon which is using our face. I think 3 ways of this idea.
1) It is like we can upload our picture, and we can crop our face and add to the emoticon of skype.
2) Or using a face recognizance , it will need the user to follow the instruction of showing their own facial expression and will be stored in their skype. Can be our own face or in a more cartoon way
3) Or like Sims, we can choose the face details, like hair, eye brows,etc.