#1 looks much better in the Lightbox view where the contrast appears higher. Looks good then.
#2 For me, there is a conflict between two subjects of interest. The red flower basket in the top right corner and the man's red shirt. Here is a version with a reduced blaze of red in the upper right.
#3. Why have so much space above the subject? It is potentially a good image but I would crop a little from the top.
Here is the cropped version:
#4. Yes, as John said. The left side is sharply focused but it gets softer towards the middle and right side.