Fantasy art airbrushed and colorized of existing design

I have a project that I need price quote on. I have the greyscale image and require ONLY that image to be airbrushed and colorized in your best quality. I'll provide a layered photoshop file. I'm looking for a color design with depth and will knock the socks off of our customers. I have several other pieces of similar fantasy artwork that may need your talents. Wacom tablet and photoshop or Canva experience preferred. I'll require the layered file with the color layers returned so I can set the art up for other items. Thumbnail attached