Okay, imagine you are drawing a picture of your daddy. You might make him look like he has a big beard, a kind face, and maybe he's wearing a long robe. That's how some artists have drawn God the Father in Western art.
Now, imagine God as the biggest, most powerful person in the world. He's the one who created everything and takes care of everyone. People use Western art to show how they think God might look. They use things that are important to them, like beards, robes, and kind faces, to make their pictures of God.
Some people might not believe in this God, or they might imagine him looking different. But for those who do believe, God the Father in Western art is a way to show how they think of him.