I live in the country, 7 miles from nearest quilt shop. I had so much business it overwhelmed me. Most quilting I got was from word of mouth. You do a good job, follow thru on your timelines, your business will thrive.
Don't spend tons of money on a storefront. Also, buy some business cards (cheapest are VistaPrint -- they do a good job) and put them around at the quilt shops that will allow it. As for advertising -- that's all I did. Oh, I have a blog (free).....wait before building an actual web site and see how the business is. Good luck!