You certainly found a varied group of colored pencils for your entry. I like the many colors and the jumbled mix of them.
For a really good picture of perspective, you might want to concentrate on depth of field. Picture perspective usually means showing the relationship of things that are far away and close up. With your pencils, that would mean getting the background and foreground really sharp. This is because none of your pencils are really far away.
You might try this grouping with an aperture of, say, 6.3, 7, and even 8 or higher. This will slow down the shutter speed, so you will have to hold the camera extremely steady, or use a tripod. But everything will likely be nice and crisp. I think you probably used the kit lens and that is probably your best bet with this closeup.
Good luck in future Challenges. I shall look forward to seeing more of your work.
Somebody has a nice colored pencil collection :-) Compared to other photos in this challenge, I don't get a sense of dramatic perspective effect as described in the challenge.