You wouldn't consider making a tutorial, or a dev log of how you made your game for PSX?
Because making iso files that work on emulators is amazing.
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There are several tutorials, but I also have a few github that help beginners get setup. (Also a channel called Wituz on youtube that has a PSX dev tutorial series - but he uses very old software to compile the games).
Basically the steps to get to iso:
1) Setup the development environment (SDK + compiler + make)
2) Compile the ps-exe (most emulators can run this - but of course it does not contain audio CD)
3) Use a tool such as mkpsxiso to make the CD image (if necessary)
A good place to get you started:
http://psx.arthus.net/starting.html