Most of your work has what is known as blurring by the looks of things this is not really a bad thing buy can take away the over all quality of the piece and in some cases take away the true perspective that the artist was going for.
The last one in the jail or sewer I can't tell and it is really dark maybe change it a bit add light like a torch on the wall or have one holing a lantern in his mouth or candle to add soft glow lighting to the piece to help bring it to life more and enfisize the details better