I'm far from having it all figured out but, I have learned some things. First thing is never put a knife out there that could be confused with a knife coming out of Pakistan. Second is never chase the bottom. If your quality (design style, fit and finish, performance) is good, set an appropriate price and be confident in it. This has already been said but it bears repeating, NEVER engage a known idiot in a public forum. Sometimes they will catch you off guard and you don't realize they're an idiot until you are in contact; this is an ambush...immediately break contact and continue mission!
Where and how to sell your knives is something each maker has to figure out. 80% of my sales come from custom orders and my books are almost always a year out. The rest of my sales are at knife shows or through social media. My number one advertising channel is Instagram. I currently have about 2200 followers and honestly, most of those are knifemakers. Not a lot of potential sales in being followed by so many knifemakers but, I'd guess that 5% of my following are potential buyers of knives in the style and price range I make. That's 110 serious buyers with enough disposable cash to buy one of my knives. It has taken me about three years to build this following on Instagram and it takes work and patience.
This was also mentioned above but, can't be overemphasized; people buy the maker at least as much as the knife! Who are you? What is your story? How do people find out more about you? Do you have a website? Public Facebook page? If I google your name, will photos of your knives come up? It takes years to build a solid following in any craft, knifemaking is no exception.
I've saved the best tip for last! This is going to seem rather anti-climactic but, this is my best advice. "Do some kind of marketing task every day!" This is serious! You have to commit. Example: I was in Tahiti last year enjoying a vacation with my wife and our friends. Every day, I photographed one of the three handmade folders I brought with me using the beautiful scenery of Tahiti as a backdrop and every day while on that vacation, I posted one of those photos to Instagram and shared the post to Facebook. I was sharing my story and my knives and that is marketing!
Bob