fanarts at art markets

Hello I hope this is okay to ask here. I'm new to everything and I was just wondering po kasi I've been looking at those application forms ng most art markets and usually they say may % lang na allowed for fanart items. I plan to join po kasi but currently most of my products are fanart as I havent tried making OCs yet. My question po is how do they decide if something is fanart? Like kapag recognizable po ba talaga yung character/celeb? And what about those inspired art since nauso yung blind boxes, I've seen kasi stickers with quotes tas smiskis yung illustration, is that considered fanart din po? I also make themed keychains based sa game character's aesthetic din po kasi and also planning to add din clay figures. I just want to know po what they actually consider as fanart. Gusto ko po kasi magjoin but ayun nga po wala pa kasi masyadong non-fanart products kaya medyo sad lang haha hopefully someone can help me with this 🥺 thank you so much po!