Hi Lukepit, I'm giving your map a -1 for a couple of reasons. Well first of all, the theme of the build is very original since no one has built a milk carton build before (im totally not building one), but, the build is actually just a big white wool box with a little bit of light blue font on it. It doesn't really look very appealing. I think you can use some more block variations for the build instead of only using 1 block for the whole build as that can make the build look bland and uninteresting. Secondly, the jumps are just very simple. Most of the jumps are just a solid block or glass panes. I suggest you to use some more variations such as fence, iron bars, snow, brewing stand, piston, vines, ladders, slime, ice, soulsand, heads and more. This can make the parkour less repetitive and more fun. I also suggest adding a spawn at the start of the parkour and put the creator credits there. Good luck, Lukepit!