Post - upload image api cloudinary

Friends I’m trying to create a single image using two other images, so I believe that the best way is using the cloudinary API.

At the moment I want to send an image from the database (in the future take an ready-made image from the cloudinary folder) and add it with a dynamic image, when I click on the button action the wish is for to send these two images and return only one, each in its proper position, the idea is to perhaps use a repeater group, but this may be for the future.

could some kind soul help me with the use of the post with cloudinary? I’ve been reading and rereading the bubble and cloudinary api options for a few days, but without success.
thank you very much in advance.