Ey all! I'm having a hard time deciding on what rating I should use for some of my art. 

For example, and Trigger Warning for blood, I'm going to be uploading this image - ✦Clicky✦ - but I'm unsure if this would fall under "Teen" or "18+"?

Has anyone seen any guides on the ratings here? And if not what are your personal thoughts?
I'm leaning more towards "Teen" since it's cartoony and there's no actual body harm BUT I want to get some opinions first 🤔