The mistake every child makes is drawing too many humps on 'm', or too few. Teach by sound: when you say 'mmm', your lips press twice. Two humps, two press. 'n' is one hump because the sound is shorter. Pair 'm' and 'n' on the same page so the child sees them as siblings, one with two humps, one with one.

Two humps, one breath. The shape of a Multan rooftop, the shape of two hills meeting. 'm' is a small landscape on the page.