I an relatively new to blender and I am still trying to get to grips with it. I am mostly using it for simple architectural renderings which turn out quite nicely. However, today I used a tutorial posted here about creating trees with transparent backgrounds. The tutorial was easy to follow and I successfully inserted a nice tree into my scene. Unfortunately, once I rendered it, instead of the tree shadow only the plane on which the tree image was placed did cast a blocky shadow.
How can I achive the plane to be invisible and the tree to cast a proper ‘tree-like’ shadow on my building?
Many thanks in advance