To answer this, it really goes back to the first post I wrote in this series, Defining My Brand. Once I became more clear on my brand, it become much easier to find (and target) my audience.
As I said in that original post, my brand is centered around accessories patterns (in particular shawls). Because of this, my audience would be knitters who enjoy making those things. These are my people, my customers.
I think about what my customers want all the time. I take into consideration suggestions or comments that I've received over the years. For example, many knitters have told me they really love that I add the written instructions for the charts on every shawl pattern - so I've continued to do that. I've had people comment that they prefer when they can tell the shawl shape from the photos, so I've been working to ensure that at least one photo on Ravelry gives you a good idea of the shawl shape.
Need some help finding your audience? Here are some resources that might help you: