Look out for signs that a pupil has made a small leap or might be about to start a small personal exploration, so that you can help the pupil recognise it too, and remind them they have permission to follow.
How best to spot those small branches in a journey? By talking and tuning in.
Recognise these moments (of creative instinct) are often fragile and easily ignored or destroyed.
Sensitively encourage, by “suggesting” more materials, ideas, prompts. Never control or “tell.”
Gently keep pushing the pupil to look “outwards” (by looking at other stimulus or externalising by drawing, painting etc) so that what is happening “inwards” can be fed.