My creative experiences have resulted in some wonderful TTRPG works. Here are some of my more well-known ones:

The cover of FLEE MORTALS, the MCDM Monster Book!
The Banner Image for the GRIM HOLLOW: Transformed successful Kickstarter!
GI JOE RPG Organized Play Adventure Operation Snakebit
Beautiful artwork shows an elven banner wielder looking about her realm.
The cover of Scion of Darkness. Its got a big T-rex on the cover!
Cover of Adventure Big Problems. Adventurers are Stopped at the town gates by the watch.
The cover of The Spelljammer's Cookbook. It shows a spell jamming ship flying through the cosmos.
The cover of What Dereams May Come! A Red Wizard is on the deck of a ship commanding his undead crew.
Cover of Through the Veil, and 5e supplement of Feywild Themed Magic Items!
Cover of The Blighted Sun with the convention sigil it was written for on the cover.
The Four Kids adventure cover. Shows a stuffed myconoid doll with a nighlight fungus plant.