Live preview
A line of text under the editor shows the glyph in context while you draw.
Where
- Glyph editor, below the canvas
Below the canvas, a line of set type shows the glyph you're editing (in the accent colour) between letters you've drawn, the way type designers proof a letter. It updates as you drag. If that's slow on a big font, turn off View › Live preview updates: previews then update when you let go.