Attack on Titan! also more portraits!

Here is a bunch of my latest work. I just finished this Attack on Titan (Shingeki no Kyojin) fanart. This is the longest I've spent on a piece yet. I think I really need to work on my painting economy. I think it lacks some saturated color, but I could not figure out where to add it. I setup this painting by doing value studies before hand and I think by doing them it really helped me organize the work. Maybe I'll get a gif up of the process here too. 

 

Above is another portrait I did of a friend. I spend a long time on this as well, as I constantly went back to it to look for areas where I could improve likeness. Also Painting curly hair is hard!
Below is my first attempt at a still life I setup using a shadow box. The drawing is not very large so I could not get very deep into details on smaller objects. But as a light study it is useful. Also included is a page from Toronto Subway Sketching. These are a great way to make friends with similar interest and learn a lot!

Let me know what you all think! Thanks!

-Alex