Learn step-by-step how to draw lichen and Iceland moss under a snowcap, designed for 7-year-old kids with simple instructions and tips.
Let's check the grammar of your sentence first:
Original sentence: Draw lichen and Iceland moss under a snowcap.
To make it clearer and grammatically correct, you can say:
So, your original sentence is fine, especially for instructions like a drawing prompt.
Have fun drawing!