The handwriting's fine. How realistic are his illusions?

Thanks for asking!

He probably could do the more realistic ones if he tried, although it probably requires a lot more power than usual to maintain it.
So his more practical usage is more along the line of "hologram" with either only wireframes and/or semi-transparent green "surfaces".
(See the previous art's "chair" for an example)

His whole gig is more like he can "manifest" them as a solid, usable object for a limited time.

I see thanks. That sounds like it could still be pretty useful (I have one illusionist who's a shy Raccoon; his powers can't manifest solid objects at all but can have audio, visual and olfactory effects). Can Kirbio's illusions be used for things like making walls or movable platforms?

mmm that is indeed an interesting question as I have never planned that far ahead lol
considering I pretty much only used him to represent me on the internet + fun art w/ friends and stuff, and the only instance where I used him truly "in-universe" was just a short self-insert mini-game contest where everyone can fly by default.

I would say he probably can make temporary ones that can easily breaks and also be easily penetrated by anything non-substance (eg. wave-based power such as sounds, condensed air shots)

I see thanks (those would be interesting mechanics to use in a platformer).

hi, rather likable, marvelous effort :3