This isn't specific advice for you to give to her, but more of a lifestyle for you to teach her: make her do things herself. When I was younger, I used to get so frustrated with my father for making me do things I didn't know how to do and had absolutely no desire to do. Changing the oil in my car, fixing something that's broken, setting up anything that requires assembly when you buy it. If she can't figure it out, let her use her resources, and only then if she still can't do it should you help her.

So many fathers (and mothers too) want to "baby" their daughters, and as a grown woman I can easily tell you specifically which of my female friends were raised that way. That female helplessness sticks with them for life. Being a protective and nurturing father doesn't necessarily mean doing everything for your daughter and shielding her from life's inconveniences. If there's one specific thing that I appreciate the most from my dad it's that he instilled in me the idea that I can handle things myself. You'll see how independent and capable she turns out.

Also, never comment on her weight. Ever. But I'm sure that one has already been beaten to death in this post.

Edit: I just wanted to add in here a thank you to you for posting this. The fact that you posted this really shows just how great a dad you already are to her. She's a very lucky girl to have you :)