Building a website is the easy part. You have some great suggestions here.
However - once you build it - have you thought how you are going to drive traffic to it?
Have you thought about SEO?
What I'm getting at is this - nothing equates to the come down you might feel - when
very few come to your site after you have knocked yourself out getting the site online.
Most of the visitors to this site are Semrush Robots - so mentioning you have an art site
on this platform won't drive the kind of traffic you might think.
If you already have a traffic funnel in place - great.
On the other hand - if you don't already have a traffic funnel working - an art site
is not the first place to start.
You want to build a traffic funnel before you build a web site.
If I were you - I would start with a Youtube channel.
Take a look at -
https://doodlewash.com/angela-moulton-artist-how-watercolors-changed-my-life/
scroll to the bottom of this page and you will see her traffic links.
Her web site -
https://pratt-creek-art.myshopify.com/ ... shows many sales.
That did not happen by chance.
Normally who.is site will tell you how long a site has been up. But hers is Shopify site - so no info.
Hopefully she bought her name from an online site registry - allowing her to transfer her site
to another platform in future if she wishes to do so.
Her last link is her Youtube channel - currently with 4.17k subscribers.
However her Youtube channel has been up for 2 years.
Now here's the clue - a Youtube channel enables you to direct traffic to your web site.
This is a traffic generator.
Back to Doodlewash - her links also show a link to her books selling on Amazon.
I'm sure her books include her art web site url.
She also has a Facebook account. From there you can again direct links to one's art site.
Whatever one thinks about Facebook - it's ad engine is without peer.
She also has an Instagram account with guess what - 12.9k followers. And a link to her art site.
Her TikTok site has 157 followers - also linking to her art site.
All of these have created awareness of the artist. Once you get that going - then it is time to
knock yourself out putting up an art-selling site. This is what it takes.
All of this has created a Google footprint of 3,330,000 links on Google with her name.
This is a traffic funnel. Without it - your art site won't get any significant traffic.
Just my 2 cents.
Best regards.