That's one nice cone icon, especially for a practice work
As AP-GRAPHIK said, the perspective isn't exactly correct, well it could be if the cone was flattened (cars are known predators of cones ), but all-in-all it looks good.
For me it looks ok, I mean, is not so wrong. I did it without any intention of making an icon for release, but the result was fine enough for me and decided to upload it, btw, thank you
As AP-GRAPHIK said, the perspective isn't exactly correct, well it could be if the cone was flattened (cars are known predators of cones