Lourdes - good start, but needs to be crisper (they are too blurry), and smaller. Use the other avatars as a guide. Same font/color per each avatar party type, same general size, etc.
Which font do you use?
The letters are formed by arranging pixels manually; so D - IA, for example, would be
X X X X X X X X X
X X X X
X X X X X
X X X X X
X X X X X X X X
X X X X X X X X
X X X X X
X X X X X X X X X X X X
You can use existing avatars as templates, I'm pretty sure we have one for each of the normal letters.