I have a hard time committing to any social medium, but I got most of my commisions from the Guild and people finding my art on DeviantArt and my website. I'm not entirely sure how the number of followers is correlated to the amount of work you get; surely there's a connection if only because of visibility, but followers are statistically enjoyers moreso than buyers.

Personally I have all my art in one place on my website, it usually makes a good impression on people so long as it's well organised and accessible. That's also how I was hired for mapmaking commissions by applying for conlanging jobs lol.

To conclude, committing to social media is nice if it doesn't cause pressure on your side (for me it does because I just don't make enough maps to commit). But setting up a fixed, visible portfolio may be just as important depending on what you do.