Such pure beauty; the linework in crisp, minimal while giving touch detail where necessary. Also the concept of a gently slid off-shoulder gets the right balance of a profile bust-styled portrait with wholesome forms, her delicate yet firm shoulderline and clavicle really radiating a healthy vigour in tandem with the soft natural white of the paper canvas. And her expression... peaceful innocence at its best.
I like your style, it's very sweet and femininely cute. This piece is so beautifully simplistic by itself that it really doesn't need color or anything else to make it complete. Keep it just the way it is ^-^