Curious About DALL·E3: How Does It Seamlessly Integrate Text into Images?

Witnessing the development of AI-generated images, I have several questions that I'm really curious about. Firstly, I'm wondering how Midjourney and DALL·E managed to teach their models to learn finer details of objects. For instance, understanding the symmetry of human faces and that there are only five fingers on a hand. How is this level of control and perfection achieved through training?

Another thing I'm eager to know is how DALL·E3, the latest version, can seamlessly embed user-expressed text into images. The way it matches the style, font, and colors of the text to the image appears incredibly natural. Is this achieved through a single image generation model, or is there an additional text generator that synthesizes the text and establishes a connection with the original image before placing it back into the picture?

I apologize for not being able to find many articles that demystify or analyze these aspects online, which is why I'm asking here. If you have any insights, please feel free to share!