how to make cool background effects in geometry dash

He completed every Auto level in the game in 2014 while on mobile, every 2* (Easy) level on December 2, 2016, every 3* (Normal) level on December 12, 2016, every 4*-5* (Hard) level on February 16, 2017, every 6*-7* (Harder) level on September 16, 2017, every Easy Demon level on October 15, 2017, every 8*-9* (Insane) level on May 13, 2018, every Medium Demon level on May 11, 2019, and on February 23, 2020, became the first person to ever beat every single possible Hard Demon in the game. He is notable for beating entire difficulties worth of levels. Cool is also the second person to ever reach 150,000 stars legitimately, after Superchat. (Smiffy777 currently has the highest amount of Demons legitimately completed in the game, with over 5,550 as of December 19, 2022). As of December 19, 2022, he has over 4,950 Demons completed and was also the first player to reach 3,500. He became the first Geometry Dash player to ever reach 100,000 stars on April 21, 2019. He is currently #7 on the Geometry Dash Leaderboards with 208,000 stars as of December 19, 2022. His current hardest Demon is Digital Descent, which he completed on January 17, 2021. On top of this, he has beaten numerous other lower-end Extreme Demons. He has beaten many Extreme Demons such as Stalemate Redux, ZAPHKIEL, Ziroikabi, Audio Expulsion, Asmodeus, Phobos, Sakupen Hell, Conical Depression, phosphorescent, and Bloodbath, as well as completed all the levels by Team N2 (consisting of Artificial Ideology, A Bizarre Phantasm, and The Hell Factory ). Cool (formerly Cool Dash) is a skilled American player and star-grinder in Geometry Dash.

How to make cool background effects in geometry dash