Great work! The freckles are a nice touch but they seem to be patterned. Kinda of drew me out of my fantasyland. You have outstanding work that I hope to aspire to. This is not a cut on you, just constructive feedback.
Awwww - she looks adorable here! A sweet little smile, some great lighting touches in her hair, shirt, cheeks and chin really giving her shape and form... a really cute shot of her, and sometimes a nice, close crop is a great way to keep things focused and fun. Very cute pic!
Part of why I am so fond of Gwen is her innocence, so I just wanted to do a pure vanilla pic of her in her element.
I tried to keep it subtle, I was wary of making her expression too goofy by over-rendering it.
There's multiple light sources too - the strong sunlight from the side, and the faint blue glow from the sky.. And her ears are blushing a bit too!
I have moved away from textures a bit after a brief experimentation earlier in the year, but they seemed fitting for this image, so I used a mix of "Texturiser" and "Artistic-Sponge" filters on her top to make it look like real fabric, and rendering freckles is always fun!
I think the different techniques and elements you used here really blend and work together well. It's worth testing some of of those processes from time to time to see what you like, what you don't and from there, figure out how you might tweak your approach into something you'll like even more. She's a very worthy test subject and you really worked out an adorable snapshot for her.
It's the little touches around her expression that really make it all work as cutely as it does - well done and a very fun change of pace here!