Use the variables to adjust the chunk generation and click the green flag to watch! If you choose biome 2, then set water level to 7 for more cacti. Cacti are glitchy and that I don't know how to fix. :P
Update: My own texture added! It's really smooth, bright, and took a lot of work! Thanks to AchillesX for the base, I just added my own texture and modified the positions and some of the variables.