The mechanics of Pinterest Competitions are similar to those on Instagram, just using Pinterest instead obviously. This organizer usually asks you to follow their Pinterest account. Then, you are often asked to repin several times in their particular post. Sometimes you also need to make a board about their product or put the hashtag that is already set by the organizer. Please notice the terms and conditions of the Pinterest contest such as who can participate, minimal age, etc so you can choose which competition that is a match with you so you will have a higher chance to win.