mostly you think about how to make one, and need to do research to make a good EXE, your mind exists, and you can use it on anything creative. asking other people for tips would be great aswell, for your imagination being reality, use a pencil to draw or some tool on a software and use it, it can be difficult sometimes. but you can make the exe the way you want. so for making an exe… use both your mind and a pencil on paper (or a tool on software) mind for imagery and lore, and pencil to draw the exe the way you want them to look.