Let's try and see all the Easter Eggs in that picture.
1) The "O" in One Piece at the top is Konoha's insignia
2) The "I" in One Piece at the top is Naruto, as opposed to Luffy
3) Located on the "E" in One Piece at the top is a shuriken
4) Nami is wearing a design reminiscent of the Akatski's cloak, but with the Konoha symbol instead
5) Naruto is behind Nami (Though not shown, you can tell by his sandals and clothes)
6) There is a fox in the bottom of the picture to represent Kurama
7) The fox is wearing the Uzumaki clan symbol on it's back
8) Luffy is eating Ramen, Naruto's favorite food, while Naruto is eating some meat, Luffy's favorite food
Anybody see anything else?