It is a quick outline sketch by Tina (whilst chatting!) of some roses and chrysanthemums. The mark-making is soft and expressive and moves smoothly through different blues and greens. The result is beautifully fresh and spontaneous.
The drawings can stand alone as they are, can be used as a basis for further work in oils, or can be developed with other media; for example, with watercolour washes the oil pastel acts as a resist.
If you're not confident about drawing as Tina did directly from a subject, then you can also use this technique with photographs or tracings to excellent effect.
Here's a different subject by Fiona this time, based on plein air sketchbook work of a ploughed field, drawn here using a biro through a soft pastel and oil pastel 'plate' as above.
I'll post a 'how to' with details of materials and photos of the process later this week.