Your story "Dancing Shadows" is magnificent. It is the first story by you that I have read and certainty wont be the last. I don't understand why more people don't comment and star it, the story is just incredible. You should create and account on "Fanfiction.net" and post this story. You will get a lot more recognition and comments and critiques and ratings and favorites and more. Please post your story on Fanfiction.net (and then send me a link to your account ;D ).
Your representation of Itachi is excellent. You capture his emotionless personality combined with true feelings buried perfectly and how he deals with those. Sakura's response to him and her internal battles are well played out and described. You put in a perfect amount of detail about the two. With how realistic you make the two and their developing relationship, I can completely see it like it could really happen. What I mean by this is, many fanfictions between Itachi and (whoever) Sakura, they make it so Sakura just gives in to Itachi because of his mysterious personality and his looks, as if lust took over. You don't do that. Yes, there are moments when lust is overwhelming, but Itachi doesn't simply captivate Sakura right in the second chapter and then have sex with her in the third. Your story takes things slow while giving it enough speed and events so it's still interesting. I adore it.
Some tips (take them or leave them): Get more creative with the sex scenes. The two you have are really good and I really like how you back Sakura her back bone and she tells Itachi no on the boat. But like... Have more foreplay and some oral scenes before they go all the way. Besides that... maybe fix some simply grammar mistakes?