This is my original drawing "Marble white butterfly".
 
Medium: Soft pastels and pastel pencils
Surface: Pastelmat
Size: 10 x 18 cm
Size framed: 20 x 30 cm
 
This drawing is framed in a natural wood frame with museumglass. This protects the drawing from UV (makes it last longer) and reflects a lot less than normal glass.
 
All my drawings are made with high quality materials. Which means the drawing will last a long time without fading colours.