How to create a new material

There are several concrete textures in HS, or from free model/texture sites. You can also get them from the web: Under a image search type in 'concrete texture seamless' search for a large, high quality jpeg and save to your laptop/computer. Then follow HS directions to upload a 2D material. Take note that it should be uploaded as a custom map and the dimensions used should be the same as the actual picture: 1080x1920, 1080x720 etc. The texture can be found under the 2D model tag and can be applied anywhere to anything.