Hey Marinda, welcome to G2G.
If you mean you would like to follow the updates, then follow the tag 'DUTCH_ROOTS' or better the current 'NETHERLANDS' tag.
You can follow tags from your genealogical section. Click the tiny edit link on the grey block, top right.
If you mean that you want to join the Netherlands project team, then follow the tag 'Netherlands' and respond in this forum thread for 2020.
If you mean adding the sticker, see https://www.wikitree.com/index.php?title=Template:Dutch_Roots_Sticker