In your CSS, I would search for this line:
.ipsUserPhoto_tiny img
Within that, there should be a "box-shadow" line. Remove that and it should remove the shadow for you.
Sorry if this is hard to understand, I'm not very good without being able to see it live. If you don't understand what I mean, you could message me your forum link and I can give a more detailed fix.
Same should be for the font-awesome icons, I'm just unsure what CSS class that would be under, perhaps a search for "font-awesome" in your CSS and doign the same process as above could help with that!