You have to drag the items to make you own skatepark. To delete an item from your skatepark, just drag it back to the Inventory and it'll deseapear. Try to use the perspective to create a bigger skatepark, and share it with your friends !
Imma do a 3D version. If you want any upgrades, just tell me (either in the comments or on my profile). Don't forget to smash the ❤️ button for more amazing projects. Thanks to @1Feli for letting me discover the joy of riding a skateboard and to myself for the joy of doing so in a skatepark.