hi @misschiara, for the guidelines of this contest you may read this link: https://steemit.com/blog/@juliank/happy-thursday-steemit-share-your-macro-and-colourful-photography-1515598454-1276112
@juliank is using CET (central european time), I believe we are 7 hours ahead. you may find at the bottom of the post, the days and what photos to enter. Have a great day!