I imported the ProCreate image into Photoshop, enlarged and retouched it, increased the resolution, then imported the retouched version into Corel Painter X3 and repainted it using the Oil Brush Cloner. After saving the Painter file as a Photoshop document I retouched some more.
The final image, 40 x 30 inches, will be output as a gallery-wrap canvas.
Digital print on canvas
40 x 30