New Icon for Bad and Good Mood

I have an app and would like for a talented digital artist to create 2 icons which will make the mood of my app more concise, and even uplifting. The current icon is a white angel for a good mood and a grey angel for a dark mood. The Angels do not pop out, when you are looking at the app, so I would like something more dynamic that can easily identify the moods.

My app is call Full Moon Calendar App is both on apple and google play.

Find my app on www.fullmooncalendarapp.com.au