Hello Potsupotsupara, welcome back to Fiverr and the forum.
1.) On your character gig (third link), you seem to forget to change the description of each tier along with the title. For example, the first basic tier said “Character sheet, 2 Outfits” - but the description said one outfit design. Same thing with the rest of the tiers.
2.) For your anime sketch gig (second link), you mentioned the possibility of accepting NSFW request for the premium tier. Please find the following excerpt from the Terms of Service:
"Gigs and/or users may be removed by Fiverr from the Site for violations of these Terms of Service and/or our Community Standards, which may include (but are not limited to) the following violations and/or materials:
Adult oriented services, Pornographic, Inappropriate/Obscene"
I would be very careful if I were you. Even when other sellers seem to offer this, they will take the risk of being banned (we do have stories of long-time sellers being banned from Fiverr because they offered something against the ToS from ages ago that were only found out recently).
That said, best of luck on your career here!