Silly things that stress me out

Well I don't know if it happens to you but sometimes you want to make an OC about a video game or series but don't you get stressed out that the OC doesn't look like the canon style? Or also that it's unoriginal or that it looks like another character because it always happens to me when I want to do something like that I hate it when it happens to me then all my imagination goes to waste trying to make a 100% original lore I'm also afraid of people thinking and criticizing me I want to learn not to live on the opinions of others (ToT)