How to Use: It is oiled at the first using maybe but after a few times it is ok .Please put some paper or a book under the to be stamped paper so there is a elastic space to press.The stamped surface should be smooth(do not stamp on pointed things),the more smooth the clear stamp you get. 1.These cheerful stamps will make your students smile! Reward their hard work with an assortment of encouraging words in bright colors and designs. 2.The stamp 5 piece teacher stamp set includes phrases "Great" "Checked", and "Good Job Keep it up" The stamps are great for grading homework, to use in the classroom, or for art projects. 3.Perfect for Teacher's Classrooms, Arts & Crafts Classes At School Or Summer Camp; Fantastic Birthday Party Favors. Great for Churches, Day Cares, Home Use, Party Favors, Birthday Parties or Birthday Party Favors. These Kids or Teacher Stamps Are Great Educational Toy To Stretch The Creative Imagination Of Your Child