Learning patterns requires a certain foundation of garment sewing. You have worked for 12 years, which is definitely an advantage. The rest is the confidence and perseverance in learning, which is very important. Most people learn it twice and find it difficult, so they flinch. You know, learning everything needs persistence. After a period of hard work, you will never be a little more-a little more-a little more familiar-very skilled-very skilled, especially in the primary process from ignorance to understanding. Only through this process will you have the joy of harvest and more interest in learning. If you can do these two things, you can learn, otherwise you don't have to learn. Of course, there must be ways to learn, think more, and finally succeed in yourself.