Well here I come, let's see, I am no expert in this thing of the critiques on photographies, I suppose that I'll start by the concept, I will take this from the name because there is no much explanation in the description.

A photo of someone bathing in the sun would more come to me as with more light, I could have imagine more light coming onto her skin because seeing her there laying on the grass but still behind the trees completely covered and protected from the sun simply confuses the whole concept to me and it doesn't give it as much impact as I thought a photo with that conceptuality should have.

sun = light, she's not even being hit by the sun, the pose that she's got is a nice one, nevertheless I am not very fond of the whole angle because is not telling me much, I would really see this from another angle, maybe showing her beautiful face, if she has one that is and I bet she does, so...

anyway keep up the good work Ana you'll get much better with time and remember I am not a photographer, I just give opinions

Como é em português vou dar a minha primeira critica lol
Adorei as cores, ótima saturação, a luz do sol, é uma peça fantástica nesta composição. Espero ver em breve o resto da sessão.

a única coisa que para mim falha, é a inclinação do terreno, no meu gosto pessoal, acho que fica demais, já temos a luz as cores fortes, ela deitada, o movimento do cabelo, as proprias manchas de luz na relva.

Parabéns

ps: espero que não leves a mal adorava receber mais criticas, iria apreender tanto por causa de ti vou meter uma foto de uma sessão fotografica.