Prophetic artwork is used to convey something of the Father's heart for a specific person or group of people/organisation. It is used to release words, the Holy Spirit or a message.
For individuals, the message is different every time and always profound and speaks to the individual on a very special level. It brings me joy to see their reaction regardless of not knowing exactly how the message has resonated with them. To know it made some sort of impact on some sort of level, makes me happy indeed.