Great linework here like on 123# and 128#. The house with the stairs on 128# really gt my attention. I think in pieces like 149/ 140# you got to sharpen your edges a bit and keep in mind the color of the light you have and how it affects the skin/ clothe tones etc. Keep up!
Zazerzs said more or less what i wanted to say about the CHOW, and i'll add that strokes are looking a bit shaky. I think you should try doing a few thumbs, study your composition from those, choose one, then do a more detailed sketch, and then work some more on it. This way, you'll get used with the shapes, you'll have time to think of anatomy, composition, lighting, etc individually, and you'll have covered them all better