Now that he has awakened his divine sense and can probe the inner workings of the sect ID card, he realized that he had overestimated himself when he thought that he could create the ID card.
For one, the sect ID card was more complicated than it seemed. It was made of layers and layers of formations piled on top of each other. He had only been able to determine the workings of one layer when he had used his eyes to examine it.
Secondly, even that single layer that he observed with his eyes appears to be misunderstood now. Thanks to his divine sense, he realized that there were some inaccuracies in what he had seen with his eyes.
Even now, without the use of his divine sense, he can come to the conclusion that he was full of himself when he thought he could replicate the ID card if he only had the proper materials and a more powerful divine sense.