Thank you for your permission!
There's something about your addition, I actually took that part into consideration, but I wanted to comment on so many things that I inadvertently left that out and didn't write it clearly! Very sorry about that!
In addition to the terms I mentioned before, I would have written in full on the mod release page that it would say.
"This mod is for personal use only. Please do not redistribute/directly modify/sell this mod, or I will simply delete it."
"All rights to this mod belong to aqua, if you really like this mod and are willing to pay a monetary reward, please click on the URL to the asset release page to provide financial support for aqua."
"If you want to make secondary modifications or other uses of the assets in this mod, please go to the asset release page to download aqua's original textures and get his permission."
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After the mod is released, I'll post the link in the comments on this page, at which point if you have any questions or requests about what's written in the mod's introduction, let me know and I'll fix it right away!
Likewise, if someday you no longer allow me to distribute this mod, feel free to contact me and I will delete it immediately.
(I have one last question! Is your license limited to this asset pack only, or do you also allow me to use your other free assets? (I'm not good at English, so I'm afraid I won't understand you correctly and want to double check to avoid any unnecessary misunderstandings.)
(If your other free asset packs are also open for licensing, then I will also post different mod packs and sort out the individual URLs in turn.)
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I have edited the comments to add some new content：
If, after the mod is made, I don't upload the mod to Nexus for various reasons (like being too busy or changing my mind, etc.)
I will still contact you first and send you the finished mod by email or whatever. You can make any comments and suggestions about the mod itself and I will modify it immediately.
I'm super into Stardew Valley, so I'd like to share the fun of the game with you too, so thanks again for your generosity!
(It's after 4am in my country, so I'll check the message and reply tomorrow when I wake up!)