beautiful imagery. very striking. the first thing that pops at me is eren's face, with the impressive glow of the eyes and those giant monster sized teeth so reminiscent of marvel's venom. he has a great pose rushing in at annie, the smoke spewing out with annie coming around the bend there in a bent hulking form. the angle for the lighting is really nice and the shadows are very well put, giving some real depth in this piece. now this said, the weak point i'd say in this piece is while annie and eren are very well defined and detailed the buildings themselves, specifically the rubble being tossed at the viewer seem to lack that definition our two titans have and are bit more blurry then the rest of the image seems to call for. i'd want the buildings to have something of the same definition as eren and annie. overall, very striking and beautifully worked.
The motion in this as conveyed solely by the light and it's shining on the debris and rubble dust that is shown is amazing. There's actually more motion conveyed and how fast he's going by what is being leveled in his path then the way you've drawn Eren, and Eren is done wonderously. There is no question that Eren is on coming and crashing by the sheer detail to his body's posture.
The texture you've given this scene, contrasted by the one point of color in his eye just makes the picture, and takes our view point where it needs to go in the painting. Bravo