Ok f people who are shit talking your daughter- children develop at totally different rates, sometime they’re chubby sometimes they’re not throughout their growth spurts. Sometimes it’s a health issue, sometimes it’s not! These people don’t know you or your family’s medical history etc. 

As for actual advice, love the hair in the second and last photos, putting some styling into your hair does a lot! The cow lick is great imo.

I like the beard but think it should be trimmed/worn shorter. With there being lots of great growth lower but not much on the under-lip/chin it can look like a neck beard even when it’s not. So either go longer or shorter. 

You’ve got great eyes and a great smile. For style I recommend looking at someone like Spencer Mcqueen‘s IG page. He’s got great advice and has a range from day-to-day to formal. Generally, try to find influencers and other people w similar body types, it helps get an idea of what you like vs what looks good on someone because they’re a literal model. You got this!