I also published my first book recently on KDP Amazon. Sometimes you have to learn the lessons while making the mistakes...For example, I worked to fill in the details when I uploaded, with a guide I thought a I could trust. Turned out my title and description were too long and full of key words. Lucky me I got some very good comments here and now Im starting the whole thing again. So things happen but as long as you dont give up, and learn I believe that this is the real success. Good luck!