From the author's README on Thunderstore

A collection of DGK skateboard graphics.

About

An unofficial fan-made DGK skateboard graphics collection for skate., created using ReSkate Studio.

Installation

Install the ReSkate Studio project/mod file included with the release using the compatible ReSkate workflow. The Thunderstore listing files alone do not install skateboard graphics.

Credits

Unofficial fan-made cosmetic collection. Not affiliated with DGK, EA, or the game developers.

Install DGK Collection

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for DGK Collection and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.