Vibrant drawing by Ester Roi (esterroi.com/), made using coloured pencils. Roi uses what's called an Icarus Drawing Board technique where wax-based media (ex. coloured pencils, crayons, pastels, etc.) are used to draw a picture, after which the drawing is exposed to heat that softens and melts the wax, creating a visual effect similar to a painting.
Yes those are a pencil shavings of various colors, and yes, that is a self-portrait by an artist under the moniker, Anmagdan.