Amino -- wouldn't really recommend, but it's somewhere to get your name out.
Any body know any other good websites, or possibly apps, to advertise/sell commissions?
I've been using TH and DA but want to try and branch out and find a better site to become "known" haha ;;u;;
For sites that are meant for commissions; There's ArtistnClients and SketchMob, you can literally customize your commission offers with type, artstyle, and open how many slots you want--etc. I haven't use them that long but I did hosted in in AnC (which I haven't updated in so long, whoops) and bought a comm in SketchMob. Do note that there's some fee to pay when hosting in sites like these though. (e.g. In SketchMob I, the buyer. had to pay extra 2$ to an artist I'm commissioning)
There's also commiss.io, I can't say much because it's not available in my region and does not accept Paypal for me? (They used Stripe the last time I checked but that could've changed) In case it is available for your region though, might worth checking it out.
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For site to promote your commission, I think starting with TH does help? Both me and my friend got customers here more often than most sites, but I guess it helps that usually OC-community always have people hunting for commissions, haha.
And as an addendum to Twitter, I was gonna suggest linking your tweet to account like Commission RTer but the acc haven't updated since last year? I'll try look out for more commission promoter acc when I can ahdgahgjaf. I think Tumblr have some accs like this too but I rarely use the site to recommend anything.
I also find its easier to gain traction in Instagram if you slap as many suitable hashtags but since I see that you already have an acc, maybe you already know that?
Hopefully that'll help, even a bit!