我的心脏画着你的模样
[wŏ de xīn zàng huà zhe nĭ de mó yàng]
This username can be understood as having someone's image drawn onto the user's heart. In short, it expresses the meaning of someone's image deeply imprinted on my heart. In English, we would describe it similar to the concept 'my heart is filled with thoughts of you.'