As always, these are all characters from various Cyberpunk 2020 games I am running or playing in currently (Running a military and acop campaign, playing in a nomad campaign)
From the nomad game I am playing in...
Alex "Walkabout" Walker
I hope you don't mind some critisim but my favourite one of the pieces you posted, the Alex Walker one, is really compromised by the suitcase.
It just seems like its being seen at a completely different angle to the character.
For myself when drawing I often have similar problems when working because I get so focused on certain parts I miss the parts that new eyes are drawn to instantly.
Often just coming back to the picture after a break helps but one of the quickest ways I have found is to just flip the picture, if you are using a computer package at least,
I find even though it's almost the same picture really you instantly see more of its flaws as a image.
Nice work though.