Beautiful sky and trees are remarkable. Very good work. A series would be wonderful.

Very nice and poetic sky, however, I understand the problem you have faced. I had the same as well. I use the Nikon camera to take the photo of my paintings and use photoshop to enhance. Try to take the photo in the open area and on a shiny day. Place the canvas in a little shadow area where light works indirectly on the canvas. Take several snapshots. I normally use the “scene” mode while shooting the painting. I got the result fantastic. My camera even can capture the texture of the canvas in this way. The minimum distance should be 3 to 5 meters away from your canvas. Hope it will work as you desired.