Custom Teen Halloween Costume

I'm looking for a unique and creative Halloween costume for a teen. The costume should represent a made-up character in photo below.

Requirements:
- Fit for a very tall 16 year old
- Open to handmade, store-bought, or a mix of both
- Creativity and originality welcome
-Offer shipping and update photos

Ideal skills and experience:
- Costume design and creation
- Ability to conceptualize and bring to life original character ideas

Looking forward to your creative solutions!