This is absolutely beautiful. Your use of color, expression, and mastery of anatomy is breathtaking and the concept in itself is absolutely inspired. And the lack of background brings the focus entirely to the characters and their expressions and poses.
You generated an incredible image here and I really think this is a clever idea in regards to Loki's inner turmoil. and I also think that having Thor walking away as though fed up is a nice touch because most images involving these two with similar concepts involve Thor being oo ready to forgive, this image makes it seem like he's done.
Again, you did an amazing job! The colors are smooth and the textures are subtle and all-together quite lovely.
This is just absolutely a beautiful representation of the two sides of Loki, and the internal conflict which drives his brother away. As a fangirl I must say, just... all my feels. I know what this is like, I have experienced Thor's pain in the form of my Grandma trying to love me, but forcing religion down my throat. Thor, I can relate. And let me say this, it will not get better until Loki learns a valuable lesson IF EVER. In either case I doubt it will ever happen though. Loki is too stubborn, as is my Grandma. Come here, Thor. Let me hug you.