I’m so happy to hear you are thinking about this already! You are doing some good ground work, and I’m pleased to say there are already listicales about raising body positive kids. Does my soul good. Some places to start:
https://www.nwpc.com/teach-kids-body-positivity/
https://www.mother.ly/child/how-to-raise-kids-with-a-positive-body-image
https://more-love.org/2019/03/05/how-to-raise-a-body-positive-kid/
A podcast:
https://www.fullbloomproject.com/podcast
And to help teach media literacy:
https://www.commonsensemedia.org/news-and-media-literacy/how-do-i-start-teaching-media-literacy-to-my-preschooler
Also it’s important to check in with your kid, throughout the years as they experience things related to body image, often we think as adults that something will be experienced a certain way by children when it can be the opposite. Kids are funny that way. I also want to point out (because I didn’t see it but I could have missed it) that if you watch media with your child make a point of saying a fat character is cool or brave or what have you, older media won’t be good for this (I cringed thinking about The Goonies) but for instance in the Pokémon xy season, Teirno is a fat boy that loves to dance and you could say “I wish I had moves like him”.
Mario is fat and is the hero of his game series, comes to mind as well. Even if she doesn’t realize it you’ll be teaching her to respect bigger bodies that aren’t hers. Because everyone is unique and I’m sure as adults we know some weird cognitive disconnects start young.
Kids might also be accidentally rude or cruel as well, so back to that check in with your daughter thing. I was in college when a 7 or so year old asked me why I was so big/fat. I said “this is the way I am, people are all different, isn’t that cool”. If I was 7 and another kid said that to me it’d have been a toss up between “that’s a weird question” and total mental keysmash. Kids are all so unique.
It is mentioned in the links but to your concern about praising strength, a great way to get around that concern is to mix it up. Non physical traits, especially, are great to praise, children have more control over their actions vs their rapidly changing bodies. For instance you can emphasize kindness and helpfulness. It’s really dependent on the situation, but a rotation of complements can foster a more rounded sense of self. It sounds like she’s your only child but it’s good to encourage kids in a gender neutral way. Our culture praises boys differently from girls. So don’t be afraid to praise bravery, cleverness, adventurous thinking ectra along side emotional responsiveness, generosity, helpfulness ectra.
Something I didn’t see mentioned but want to bring up from personal experience is, your daughter might struggle with wanting to mature and wanting to be a kid at the same time. To some degree all kids do but often bigger kids are shopping in the adult clothing section earlier than their peers, I remember being embarrassed about it, so down the road if you notice her needing the adult clothes, maybe have a talk about how she’s still a kid and she can still be a kid, clothes are just clothes, and now a days with torrid you can find stuff with pop culture characters on it. (Back in my day it was very much a shift from cute fun patterns and colors to muted or jewel tones). The adult nostalgia boom is probably going to be great for kids like me who had to age up in clothing earlier. Off this, one more personal story but my mom was shorter and an apple shape, I was a pear and taller than her since I was maybe 14-16, she didn’t know how to help me dress. So down the line don’t be afraid of googling up how to best dress your daughters shape. I spent most of high school in jeans too tight on my thighs with shirts a size too big. Big oof.
I don’t know how to finish this off just, thank you so much for caring and I hope both of you have many years of self love ahead.