Tiefling Acolyte Character Commission

A friend of mine contacted me recently and asked me to create a design for her D&D character. She described her as a tiefling who used to be an acolyte growing up, so she still wears her robes. Her magic tends to be water or ice based. She has a magical lantern called the "Soul of the Moon".

I would love some feedback and advice, as this is the first D&D character I've done.