General:
* Creative
* Aesthetic
* Expressive
* Talented
* Skilled
* Imaginative
* Inspired
* Ingenious
* Cunning
* Gifted
Specific to certain art forms:
* Painterly (for painting)
* Sculptural (for sculpture)
* Musical (for music)
* Literary (for writing)
* Theatrical (for theater)
* Cinematic (for film)
* Photographic (for photography)
* Design-oriented (for design)
More abstract:
* Ethereal
* Refined
* Elegant
* Sophisticated
* Visionary
* Avant-garde
The best alternative will depend on the specific context and the meaning you want to convey.