Heyooos!! Welcome back!
Recently opened my commissions if anyone has any ideas on how to market yourself well to receive a commission then lemme know!
I would go on reddit and go on DND groups and see if anyone wants their characters drawn for them..
Here are some resources i've saved before - hope some of them help!:
https://acrylicpouring.com/how-to-do-art-commissions/
https://www.christophercant.com/blog/best-places-for-art-commissions
https://www.artworkarchive.com/blog/10-questions-to-ask-before-accepting-an-art-commission
https://millo.co/how-to-make-money-as-an-artist
https://www.sidehustlenation.com/freelance-artist/
https://www.creditcards.com/education/new-payment-options-security-small-businesses/
https://www.deviantart.com/katylipscomb/journal/A-Beginner-s-Guide-to-Offering-Commissions-Online-468025801
https://www.reddit.com/r/artcommissions/comments/h0rhmm/a_guide_to_identifying_fraudulent_users/
https://www.reddit.com/r/artcommissions/comments/dsitdd/meta_pricing_tipsadvice_for_artists/
https://www.reddit.com/r/artcommissions/comments/lhalzf/read_before_posting_verified_flair_known_scammer/
https://www.reddit.com/r/artcommissions/
https://millennialmoneyman.com/freelance-artist/
https://www.reddit.com/r/HungryArtists/wiki/artist/
https://www.reddit.com/r/HungryArtists/wiki/client/#wiki_-_do_i_really_need_a_contract.3F
https://www.reddit.com/r/artstore/comments/2lvrtu/contracts_how_to_protect_yourself_your_client_and/
https://www.format.com/magazine/resources/photography/online-portfolio-about-page-step-by-step-guide
https://www.reddit.com/r/fantasyartists/comments/kym4mh/artists_must_be_certified_before_posting_read_me/
https://www.deviantart.com/vixenkiba/journal/Tutorial-How-to-set-up-and-handle-commissions-606456664
https://thecreativeindependent.com/guides/a-smart-artists-guide-to-income-taxes/
https://www.christophercant.com/blog/how-to-price-digital-art-commissions-a-beginners-guide
Kelsey also has some good tips imo: https://www.youtube.com/@KelseyRodriguez
I would also recommend sharing your art on any relevant reddits that allow sharing - like for example i used to share my art on the Kirta subreddit and get a nice handful of likes on there and got invited to a fancy discord channel.
BUT make sure you read the rules!
not all subreddit allow self promotions.. like Clip studio paint reddit has a rule that if you share art u made, it must be accompanied by tips, etc so make sure u read the rules before posting!
Hope some of these are useful Good luck!!