If you have looked at my Deviantart page or seen my works in other places, one of the things you will notice is that I use unique canvas sizes. For me, the area to paint can be as important as the painting because it helps define your goals.
I actually had a canvas custom-made for a painting of a grizzly bear I created. Like the canvas size for “Quiet Strength – Silent Vulnerability” it was tall and thin. For the digital painting “Sundiver” I tried such a canvas size again, hoping to evoke the vastness of the sun and the smallness of the man, while still allowing some closeness to the man. Unfortunately, I was not happy with the results so someday I hope to redo the painting with some other canvas.
In other cases, I choose the opposite dimensions where the height is small compared to the width. Usually, I do this so I can emphasize the scale of the background to the focus image. I did this with “Universal Eyes – Infinite Sadness”. I wanted the side view of the galaxy to expand well beyond the face of the wolf.
Finally, there are times I choose a canvas for the challenge or I have no thought about it at all. I have a huge oil painting I have not finished that I chose simply for the challenge of its size. Hopefully someday I will finish the painting and share it with you.