Outfit: bowtie, jacket, monocle, suit, Crosier
nun: It may be imprecise, but I only tagged it as 'Nun.' You can try with your own tags to add details
Appearance: 1boy, solo, animal ears, sharp teeth, red eyes, teeth, bow, smile, looking at viewer, slit pupils, red hair, grin, multicolored hair, red sclera
If necessary: multicolored hair, tiny antlers, bowtie, microphone
Better Results: masterpiece, best quality, solo, vivid colors
Change Outfit and Background (Add parenthesis): (background:1.2), (outfit:1.2), (pose :1)
Negative: (worst quality, low quality:1.4)
SD Settings > (Sampling method: DPM++2M Karras or Euler A) (SFG Scale: 7)