>>2960241I got curious because with those settings Wai should produce a better imagine, looks like the issue was missing quality and negative tags. You can just copy settings from its civitai page and have alright results to start with.
Some more basic advice: Try an earlier Wai (8 or 9), use hires fix to upscale while adding details, play around with sampler/scheduler (Euler a is usually fine, SGM Uniform tends to work well with it IME), try different resolutions depending on the pic (e.g. 1216x832 or vice versa), try artist tags. Like the other anon said, 40 steps is overkill, 20ish is usually enough (for hires fix you can also go below the recommendation from the Wai page).
Picrel same prompt but with quality and neg tag at 24 steps.