>>51612302You can make images at 1024x1024 with NovelAI (or more, if you use custom resolution? I didn't try), but these cost more credits, I also used 50 steps, which also increases the required credits. After that, I used waifu2x to upscale by 1.6, and then Photoshop to make some edits.
I don't recommend making images with these settings, though, it costs too much, and this was the only good result I got.