Hello MrLionerr,
Unfortunately, I will be
Rejecting your map.
The theme is somewhat original, there aren't any maps specifically of lapis blocks, but there are many minecraft related maps. I would recommend checking the document linked in this thread -
https://manacube.com/threads/parkour-list-with-theme.20194/ to make sure your map idea is original.
The build is accurate to the theme, but does feel a bit plain as it's just a cube, I do understand to make it accurate this is inevitable though.
The parkour has a bit of variety, but it feels quite repetitive. Try to experiment with a larger variety of blocks and items when building parkour, as this will make your map more fun to complete.
For future submissions, please follow the format stated in this thread -
https://manacube.com/threads/must-read-map-submission-information-format.649/ This will make it easier for judges to find and judge your map, as well as easier for the community to test your map and give feedback
The length and difficulty are good for an easy map.
Thanks for submitting your map! I hope to see more maps from you in the future.