Thanks for guiding me to the correct posting page. This project was challenging for me. I learned the hard way in this lesson. After completing my project, I saved my .psp file 3600×3600 then I saved my .psp file as a .jpg at 3600×3600. Next, I accidently saved my .psp 600×600 without realizing that I was using my original 3600×3600. I went about my day doing other errands. I reopened my opened PSP software and discovered the mistake I made. So the only way I figured to reverse this was to reopen the. psp 600×600 then resize it back to3600X3600. As far as I can tell, it is the same as the original. I will not make that mistake again. Good lesson.
Sizing up from 600 to 3600 is a last-resort solution as it will add some blur, not too obvious on-screen, but if you were to print. If you don’t print, it might not be too bad, but yes, that is a lesson to remember!