expectations for a newer small business

I have a handmade product (hopehavenco.com) that i am building inventory up for a couple vendor shows that will happen in the next month - month and a half. I have a website set up and a small ig folliwng (1100) and i want to put a bigger focus on online sales as soon as we can get through the shows. Any tips on where to start with SEO for my product? and expectations on a realistic budget i should be planning to spend?

Very new to all of this, thanks for the tips in advance.