To add to the above: these pencils are a blending nightmare and i only got the blending half decently done using an odorless mineral spirit. Even so the pigment gets lifted and moved around rather then blending into each other and into the paper.
After 3 layers of color the paper becomes to saturated with wax from the pencils and they hardly take anymore layers. Putting a darker color on the lighter one makes the colors clump as can be seen in the previous image. On the green leaves of the rose you can see the wax build up / clumping which does not go away with blending.
These pencils are labeled as Student grade, however they are not worth the money! (ranging from 90$ for the full set) Since i don't like to leave work unfinished i will continue this drawing and work on the second rose. Once the drawing is done i will post the final result and a final review on the Derwent studio pencil set, however i do not think my opinion will change much.
Keep a eye out for part 2 of this work in progress!
Happy Drawing and until next time