Miracles come from love. Miracles come from a seed of hope, a glimpse, a vision of something beautiful that makes our heart sing, something we can fall in love with so much that we are willing to trust and listen to inspiration. We can act on what we have been guided or led to do. That is when miracles happen; that is faith.
The challenge is quite formidable if you spell it out explicitly: artists must look at a three-dimensional scene with their two-dimensional retinas and then generate a two-dimensional painting that appears three-dimensional to viewers who look at it with their two-dimensional retinas.