If using LoRA, it's best to use LoRA "DMD2" and generate samples with a sampling step of around 10 and a CFG scale of 1.1-1.5 (other detailed settings can be left at their defaults).
Adding the artist name to the prompt might also be effective, but you'll need to experiment with this yourself.
Since Otto's outfit is unique, you might want to add the following prompt: "numbers'_uniform, Roman numerals, blue gloves, face harness, covered navel, blue gauntlet,"
If you're using the "Numbers Suit" type LoRA to improve the accuracy of the outfit, adding the above prompt (after removing the trigger words for the suit-type LoRA) might result in a more accurate character recreation.
Also, the "blue cargo pants" in the LoRA trigger word should be emphasized as "(blue cargo pants:1.5)."
Adding half-closed eyes and a blank expression to the prompt might make it more accurate?
