This piece is called "Improvement" because that is what, to me, it represents.
The worn-out old buildings symbolise anything from a country to a person, who are in need of help or repair. The additions of sewing, ink and paint are symbolic of an attempt to improve the situation.
However, it is perhaps an emotional rather that a rational attempt. It does not in fact fix or repair, it just improves aesthetically.
I think this applies to the idea that those in control/power who have the means to make change and improve, do not, and those without the ability but with the need and will make uneducated attempts to help.