Usage of oil pastels is very difficult work to handle and is considered as one of the most artistic accomplishments in the world of art.
It consists of a lot of techniques and care to be addressed in order to put our imagination on the canvas with the help of oil pastels.
The beginners must learn how to handle the oil pastels properly and must start by simple coloring first, before  moving on to the shading part.
Purchasing a huge fancy oil pastels setup doesn't make a person capable of achieving excellence in this field but following and performing the techniques with simple oil pastels should be the first step.