Hi Chismu,
I'm going to have to give this a -1. The main thing I see with this map is that all of the parkour is floating at that there is no central build. While the floating jumps are decorated really nicely and the theme is okay (although there are maps with trains/locomotives like Thomas, but this is different) , it would be improved a lot by a central build with the parkour on, in, and around it.
Another thing to consider is that there isn't really much jump variety, as all the jumps are normal jumps. Try to mix in other blocks such as fences, flower pots, walls, slabs, stairs, carpets, anvils, trap doors, and other kinds of blocks to make fun and varied parkour. There are a proper amount of jumps for the easy difficulty, so that's good!
I think this theme has a lot of potential if you put some thought into a unique central build! Please note that I am not a staff member and I am just a Mapper and community member who likes to give constructive feedback on submissions to help people improve their skills :)