Standard clipart is usually not a very detailed drawing. Mostly they are images that have little detail or are outline drawings. The standard clipart is for use on the web to use in documents.
Posters and fliers: Professional grade images can really enhance posters and flyers that advertise holiday parties and other events.
Don't have a friend or relative draw or design it for you. Just because someone is artistically inclined or has a good eye for design, doesn't put them in the same category as a professional cartoonist. Cartooning is a very specialized field - a talent that is honed over many years of trial, error and experimentation. You may have an idea of what you want, but executing it on paper is harder than most people think. It takes a professional.