Value Study - Take 2

This is my second try at a quick value study.  My goal is to replicate the values along the gray scale with a different paint color each week.  My self imposed rules are:

• Start with a color that you think will fall in the middle of the scale at 5.
• Bounce around the scale.  Don't go completely in order, but try to stay with the same color.
• At each point on the scale, use the same paint color on a paper primed with black gesso and paper primed with white gesso.
• Just mix the colors.  Don't get slow and fussy.  

I did this in about 3 minutes.

• The darks should be darker.  
• I did a better job making the lights lighter.  
• The mid-ranges aren't that distinct and are not in order.