Hey guys, I'm new to modding so I don't exactly know how it all works but I learned the basics of it. Now, I unpacked the xnb file that I wanted to modify, edited the png file that was in it, packed it back, and replaced the xnb file in the game folder with the modified one. I loaded the game but don't see any changes. I went back to the xnb extractor to check if I packed the file correctly. I unpack the file again and checked the png file and it showed me the png file that I edited. So basically it should show me what I changed in the game when I load it but it still doesn't. If anyone knows if I missed a step or something please let me know because I'm so confused.
We very much do not recommend XNB modding, for some reasons detailed in the link I'm going to give you. Please check out Content Patcher for editing game files without replacing them: https://stardewvalleywiki.com/User:Pathoschild/Modding:Content_Patcher