That is, not a theology of aesthetics, but on creating beautiful, aesthetic theology. I wish to explore ideas and methods for writing theology as art for a large project.
The Islamic concept is developed in several dimensions. It rests upon a perfect balance of nature. Next, it goes from basic necessity, to higher levels of goal fulfillment.
Your project is quite interesting. You may take a look to some works of Hans Urs von Balthasar, for some interesting theological aspects. In the specific field of aesthetics, I will suggest to take a look to prof. Ralf Van Bühren's works (please see http://docenti.pusc.it/?u=buhren). If you are interested in communicating faith through aesthetics, maybe the project "Poetics & Christianity" could be useful (please see http://en.pusc.it/poetica&cristianesimo and the works of the members of this research group).
Have a look at my article "Pseudo-Dionysius and the concept of Beauty", and you will find bibliography there (you can just google it)This is in the International Journal of Orthodox Theology 10:1 (2019) urn:nbn:de:0276-2019-1077
HOW about considering St Paul's call to the early Church at Philippi (Philippians 4:8: "And now, my friends, brothers and sisters, all that is true, all that is noble, all that is just and pure, all that is lovable and attractive, whatever is excellent and attractive, whatever is excellent and admirable -- fill your thoughts with these things".
Try Carl Hughes book "Kierkegaard and the Staging of Desire: Rhetoric and Performance in a Theology of Eros"! A great look at aesthetic form's impact on theological discourse (specifically in Kierkegaard's case, if that interests you). Also, some interesting work is being done in Black critical theory on this topic; try Ashon T. Crawley's "Blackpentecostal Breath: The Aesthetics of Possibility". Combines an analysis of aesthetic theological practices with healthy dose of praxis-analysis, which makes for a unique take on the matter.
As someone has already said to you I sugg that you search Hans urs von Balthasar, because talking about the three trascendentals of the being he has a theory that the beauty is the most important one.