Wish I can specify the thickness of the paper used

I recently ordered a stickers to put on a booklet page which a specific area needs to be corrected. I am not sure I had the option to specify the thickness of the paper used. The quality of the stickers is excellent. But for my particular case, it is too thick and it sticks out on the page. Thanks anyway for the quality and easiness of the ordering processing. The size matches exactly what I wanted. It came 2 days early too.