I'm sorry if this is a strange request. I've asked for something similar in /wg/ but this is anime related.
I would like to get a 16" x 16" canvas print of the image (with a 50% off coupon I have) but sadly it's a bit too small. I would like if someone would upscale it appropriately.
If I remember correctly, the person had used something called SmillaEnlarger. Link is a screenshot of the upscale process he explained to me and why it's better than your standard enlarge
https://my.mixtape.moe/cijcvi.png 