Still life with Different Mediums

These are representations of still life works using different mediums.
I must clarify that these are not my works, I was not able to make it to the class where these were done and thus did not have the different mediums that they required.
1)Still life collage
2)Still Life with Pastel and Water Colour
3)Still Life with Chalk
4)Still Life with Pastel
5)Still life with chalk on Coloured paper.