I'm currently addicted with this new app called MOMAN XIANGJI. The app is so cute, it's a caricature maker app. Have you tried it?
these two are my favorites ^^
For android user:(https://play.google.com/store/apps/details?id=com.manboker.headportrait)
For iOS user: http://goo.gl/6Ihfso
Anyway~ if you use WeChat to save your creation and share it on twitter and mention @wechatid, you might get a special prize.
So~ Don't forget to share it on twitter and mention @wechatid using hashtag #MOMANWECHAT. There'll we 10 souvenirs for the most unique creation! ^^