Very beautiful and congratulations. I wish I could have seen your prints personally. Unfortunately, at present, Mandelbulb3D is not supporting renders larger than 81 Megapixels. I think you would wish you had larger prints as I always do. I hope Jess (the creator of the software) find a solution for it soon. Do you have this limitation like me? Did not you resize the resolution of your renders to have larger prints? (I mean enlarging the image in photoshop before print). I ask it because I am going to have my works in an exhibition in Iran as well.