It's the fine control that I'm interested in seeing if I can learn. A flame is easy for me. Heat by itself is a different matter. [ Especially maintained at a constant but low intensity. He's not even sure if it's possible with the sort of magic he has, but he's eager to try. ]

Often the first step in learning illusions is making simple two dimensional shapes - circles, squares, triangles - in a purely visual manifestation. I don't know if your magic will lend itself well to that, but I can take you through the visualization exercises that go into it. Here.

[ He sits down across from her at the desk and holds his hand out in front of him, index finger extended, and begins drawing a circle in the air in blue-white light. ] Some people find it helpful to think of their hand as a pen and their magic as the ink, and act as if they're actually painting a surface.