My advice next time is do what I did.
write down on paper EVERY step needed for what u r doing. And if a step has more than one thing u need to do then split it into two different steps. Then as u r going through and doing it cross off or check off that step so u are certain one didn't get overlooked. I probably would have had the same problem u did if I didn't do it this way just because it seemed so simple I was bound to miss a small thing somewhere lol