Sort:  

Thanks, and I upscale some of my artwork. and this tool works OK for me. I can't share it here, but for You I took a image from google
Original Image
orginal.jpg
enlarge in photoshop
enlarge.jpg
and Using online tool waifu2x
2X.png
I did it in no time, but if you select the right setting you need than the result will be more clear.