If you want high st exposure, look for an art gallery/co-operative business where your stuff is on show along with the work of others.. Christmas fairs etc can be great if you want an annual 'push', but the costs of even those can be unbelievable. (I looked at doing Christmas Market in Bath for this year, you need to fork out at least £3k for a basic stall. There will be others around, of course that are more low-key and far cheaper.)
There are beautiful gift shops around that have jewellery cabinets - you could approach one of those to see what the response is like. They'll know what their customers would go for, normally. If they want to stock your stuff, see if you can negotiate on what percentage they would take on sales. It can be a lot.
I ran retail premises for a while, it's a huge drag, to be honest. The expenses are massive, it's a huge tie if you've got a family and want time for them. If you're dead set on going into premises, choose v carefully. The leases can tie you in for a long time, and the wrong location could lose you a lot. You sometimes need to spend an enormous amount of money on shop fittings, too before you even open the doors. Depends how much stock you've got too.
Sorry to sound so gloomy! It's horrible when someone wees on your fire about a business idea. I bet your stuff is fab, it's just finding the right outlet.
What do you enjoy the most, coming up with new designs? Making the jewellery? Or selling it face to face? If you like the making the most, you won't enjoy running a shop, the domestics of running a business take up huge amounts of your time.