Pattern
noun
様 uses its alternative meaning "manner" here, so we have an imitation manner. An imitation of the same manner over and over creates a pattern.
もよう
This is a jukugo word, which usually means on'yomi readings from the kanji. Since you didn't learn the on'yomi for 様 with the kanji, here's a mnemonic to help you out. You see a pattern in your yogurt (よう). The yogurt is an imitation of life. So deep, man. So deep.
私の妻は、小さな花の模様が好きです。
My wife likes patterns with small flowers.
そろそろ部屋の模様替えをしたいな。
I want to change the layout of my room soon.
コウイチが、コウイチの顔の模様のカーテンを作ろうとしてるんだけど、さすがにやめさせた方がいいよね？
Koichi is trying to make a curtain with a pattern of his face on it, but it's probably best to stop him, right?