The phrase "a patchwork of small" is correct and usable in written English.
It can be used to describe something that is made up of various small, diverse, or disparate elements, often implying a lack of cohesion.
Example: "The artist's latest work is a patchwork of small images that reflect her varied experiences."
Alternatives: "a mosaic of small" or "a collage of small".
We're a patchwork of small towns".
We're a patchwork of small towns woven into neighborhoods, stitched together to form boroughs, creating the fabric of what we call the City of New York".
The fringe of Shanghai, like those of other big cities, is a patchwork of small farms and factories, a short drive from staggering wealth.
As a result of all these factors, Rwanda is a patchwork of small clinics, some richer or better-run than others.
As recently as the mid-1990s, the concert industry was essentially a patchwork of small regional promoters, but consolidation has allowed a few large companies to dominate.
The script is essentially a patchwork of small and large confrontations, with some breathing room left to small-town sexual activity and homophobia.
Kingsbridge is a patchwork of smaller neighborhoods, each with a personality all its own, spread over barely 0.75 square miles.
Moreover, since few of the former collectives' shares represent actual plots, the prospect of fairly dividing the sprawling collectives into a patchwork of smaller plots seems nearly impossible.
But it pointed out that exploration and production rates were falling, and activity was fragmenting into a patchwork of smaller fields.
He decided to piggyback onto this nationwide network, which is actually made up of a patchwork of smaller regional ATM networks, and use it to sell outsourced Internet-based financial services to small institutions lacking the resources to create their own systems.
In 1997, over the strong objections of some anglers, officials at the Florida Keys Marine Sanctuary banned fishing in a patchwork of 23 small coral reef reserves.
