Abstract Textured Artwork

I need a high-resolution, textured abstract artwork with a 2:1 ratio for an 8 ft × 4 ft print.

Requirements:
- Dimensions: 28,800 × 14,400 px at 300 DPI
- Theme: Abstract
- Style: Textured
- Color Palette: Deep charcoals, smoky blacks, muted taupes

Ideal skills and experience:
- Expertise in creating high-resolution abstract art
- Proficiency in textured painting techniques
- Experience with the specified color palette
- Familiarity with print requirements and file preparation

Please provide samples of similar work.