I know on danbooru you dont really post comments but I really like your art of rin. Keep up the Good Work!
The artist doesn't comment because the artist isn't here. If you want to talk to the artist, do it on their socials. They'll actually see it that way. You can go directly to the source of this image using the Source link in the bottom left, or you can use the ? next to the artist's name to find links to all their known accounts.
Is this actually Jalter, checking the tag on twitter seems to lead to a specific character?
it took me figuring out that I can search artist tags by their social media links here but I did find the original artist and OC from that hashtag on twitter so I'm fixing this now.