My first thought would be look at Facebook Marketing and really target those adverts to people who are maybe part of certain groups or in certain areas if you need them to be local. FB marketing can start from as little as £1 a day so it's a good place to try and see what happens even if you only use it for a few months.

The other thing you can do is sell any pre-made items, or make some bulk items and sell them on Etsy or Facebook to boost your reach and as people share them you should generate more interest.

You can also search twitter by topic and location to see if they need custom items made, like those who tweet about needing a silver wedding gift or something.
To do this you can use https://twitter.com/search-advanced

If you need any further info or advice, are looking for a custom mobile app, or need software or services setup or data automated (e.g. get a notification when you get a specific type of order, custom emails etc. etc.) I'd be happy to help.