Ooh lovely! I agree that a horoscope series sounds really exciting! Maybe you could look at some of Aries’ best traits to come up with an idea for her dress colour and style. Some ideas: bold, courageous, leader, fire (element)... etc. Their sign is that of the ram, perhaps look at what that symbolises and how you could incorporate that into your design. I love her confident expression right now so you’re doing well :D