Free users are limited to generating 250x250 images, whereas users who are subscribed to the $1 Patreon tier or the $5 Patreon tier can generate 1000x1000 images.
Free users who use the command on a $5 premium server do not gain access to high-resolution generation, the perk is per-user.
Upon a successful generation, a Delete button will show up below the image. For 15 seconds the person who has generated the image may click that button to delete it, in case a sensitive image was used by accident.
If a user profile picture was used to generate the image, that user also has the same 15 seconds to click the Delete button.