This is actually looking pretty nice. I like how you did the smooth shading on the second one.

Hey D Sirus, awesome work you got here! I really enjoy the pose of the titan. So much so I decided to sketch it out while on a phone call this afternoon. I'm sure I made plenty of mistakes but it was a fun exercise! I like the gesture of yours a lot more, especially the pinch in the stomach where he bends. As for critiques, you've done a great job with the gesture, perspective and anatomy. There are just a few small things that stood out to me. For Hanami, I think that the forearm could be a little longer. I tried placing some 3D Models/action figures in a similar perspective and it seems that at that angle the hand usually ends up somewhere around the knee. For the Armoured Titan, the main thing I noticed was position of his left (On the right of the picture) triceps. Your insertions and origins all look pretty good, but you need to keep in mind how they muscles stretch and squeeze during movements. With a bent elbow like that the triceps should be stretched so that it's peak from this angle is almost at the center of the upper arm. I included some examples of Bodybuilder Frank Zane, it's not the perfect angle but should give a good idea of how the shape of the triceps changes. For his right arm, at that angle I think there should be more of the triceps/bicep brachialis popping out the lateral side, and maybe a little less on the medial side. The insertion of the bicep may need to move medially slightly, but I'd see how it looks after adjusted the triceps/bicep brachialis. As a last note on the muscle movement, both biceps seem a little soft/noodle-ly. Since they are partly contracted it's a great opportunity give them some structure with some straights, especially around where the tendons would be. I love a lot of your shapes for the muscles, especially the deltoids. If you added a few more areas of tension/structure it would give you a real nice balance. Other areas this could be applied are to the box of the wrists, and the knees. I can tell that you were thinking about the forms of the knees, but I would recommend emphasizing the boxy forms perhaps a little more than you would realistically see. Particularly on the lateral side of the knee coming towards us, the lateral epicondyle, knee cap and lateral condyle all provide opportunity for emphasizing that structure and boxiness. My last comment on the leg, is to be careful not to lose the gesture on the outside of the quad. There should be a nice straight from the IT band near the knee, and then a gentle curve from the Vastus Lateralis. I've included an example of some knees and roughly highlighted the areas that I'm talking about. I can't comment too much on this, but it seems that his right hand is bent a little too far toward us. I know the hand, or at least my hand, can't move near as far towards the radialis as it can towards the ulna. I want to end with some praise, because I really do think you did a fantastic job. I really like the shading and core shadows on Armoured Titan, and the perspective of Hanami is super solid. I can b e a bit wordy at a times, but I hope that my thoughts prove helpful. Don't take them as gospel, but rather consider them, analyze and come to your own conclusions. I'm excited to see what you do next! I imagine Todo would be a fun one for anatomy.