I have a product, what now?

I live at the coast and we get A LOT of tourists here who come for the beaches, so naturally there's also way too many hotels, BnB's, vacation homes, etc. Now I've been making some handpainted, wooden artworks/designs (about the size of a large painting) inspired by the sea/beach/etc, that would fit nicely on people's walls or in hotel rooms and the like. I want to sell them to interior designers, hotels, tourists, but where do I start?

I only have a few try-out pieces right now, and have gotten great reactions, but I guess it would be best to have at least 15-20 or more before going around trying to sell them. That would cost me quite a bit on materials though.

I guess after that I need a website to show them off, and then do marketing.

Other that this basic idea I'm not really sure where to start and how to sell them, so any recommendations from you guys are very appreciated!

Start With a shop beside the beach, First time website will not give better support

You should try to canvass your product with Hotels and Beach houses near your Area.
One of my friends started selling a furniture coating product - as time passed by he got good orders from leading Hotels in the town.

Make a facebook page to start with, Instagram, a simple site on wix or tumblr will work too for showcasing your work. Never limit yourself to a town in the era of the Internet.

make a website and insta and facebook are the best tool for this

email people. dont be shy or give up.

OR you can sell it on creativemarket. it's good

If you want to try online quickly you might look at etsy, show your work and tell your story.

Then you can direct people to your etsy shop.

Do facebook marketing and filter by location? (Set a radius of 1/2 mile of where you wish to target)

If you are selling directly to customers, add a partner with you for investment and in return give him some % of your profit.

If you are going to sell your product to some dealers or others who can sell it to customers. Show your demo products, get some order with advance payment. Create more and sell more. Rinse and repeat.

sell on etsy

promote yourself on social media

You can never go wrong with Instagram when it comes to selling anything thats visually appealing.