Edit: put in a new design!! changed the body type a little and the outfit (and also a small part of the bio)
YEP, I made one. I wanna stop making ocs but not really, so heres one I tried to make for Steven Universe. Bio may change later.
Species: Humanoid (made up of different fungi and plants)
History: her species comes from a tree that lies deep within the rainforest. this tree is actually literally alive and a magical gem creature, that was brought into existence hundreds of years ago (originally a crystal gem itself that mutated into a tree) to keep the environment the way it is and purify the land around it. it started to become weaker once humans started to strongly pollute the earth, so it birthed out these humanoids made from the different plant minerals around it. The humanoids all have an instinct to clean up the areas and environments they travel to (as their subconcious and is directly connected to the tree), but each have a different personality. Amanita was created from mostly fungi and vines, and is one of the newer humanoids that the tree has created in years. These humanoids are not the same exact species as Crystal Gems, but are a branch down from them so they have similar powers and abilities. (its easier to understand this when you think back to the centipeedle mother birthing other centipeedles in the "Gem Glow" episode)
Bio: She was found by Steven and the gems while they were searching for signs of the tree in the rainforest. Although they were unsuccessful with finding the tree, they found Amanita and were interested in taking her back with them (as it had been years since the Gems had seen someone related to their species). Amanita soon grew fond of her new friends and enjoyed the life in Beach City, but was still too new and young to properly adapt on her own and has to live in an abandoned greenhouse that Steven and the gems found and restored for her.
Personality and Abilities: Amanita is a very reserved and quiet person, but is not necessarily shy (unless she angers someone). She is extremely curious and travels around to learn about the new environments around her. She isn't afraid to walk up to certain things that others would think are dangerous, and doesn't sense danger very well until someone warns her. However, she is a genuinely friendly person and it does not take much to gain her trust. Her abilities range from a few things. The "freckles" on her face and body are actually spores, and when the spores flare out and get on others they can change the person' body temporarily in different ways (for example, sprouting antlers or getting spots on their skin). She can sprout out vines from her back like tentacles, and use them as extra arms (sometimes they'll spaz out and act according to her feelings). She also has shape-shifting abilities similar to the gems, except she can only change into certain plants or fungi in order to camoflauge and hide from danger.
Amanita is definitely closest to Steven and the Gems, as they were the ones that found her and gave her a new home. She's a bit intimidated by the Gems from how powerful they are, and doesn't understand her species is related to theirs, so she gives them high respect and never tries to argue with them (not even Amethyst). She sees Steven with the same respect, but is less intimidated and is very close friends with him. She was able to take a liking to most of the residents of Beach City and Steven's friends (although shes a bit afraid of Ronaldo as he's always taking pictures of her for his blog), but she takes the deepest liking to Lars. As Steven tries to tell her that his cold demeanor is just a front and hes actually really nice, Amanita believes him and tries to desperately get to him whenever shes around him. Her constant focus on him soon turned into a crush, and encouraged her to try to earn his friendship.