Laura Serrano (Spain) has been posting these short WIP videos on her Instagram & Facebook pages. 

The videos are a great way to see her creative process as she uses PanPastel Colors on Pastelmat for this portrait of “Obelix”. She also adds pastel pencils for fine details (Faber Castell and Cretacolor) and used a touch of acrylic on the eyes.  Laura’s website is: http://radicalcolor.es