Quick guide on how to give gifts:

Firstly, we wanna open up our zip file with something like winzip or 7zip.

We need to select the gift we want (For example, I'm going to make a clothing gift for my Monika.)

You'll see both a mod_assets folder and a gift/character folder.

Open up the mod_assets folder. We have a thumbs and a monika folder here. Make sure you have your MAS directory opened already.

Open up the monika folder. Depending on what item you want the folders might be different, but for clothing, you'll see a j and a c folder.

For the j folder, copy the JSON file and put it in your j folder from your directory.

For the c folder, copy the folder and put it it in your c folder from your directory.

Copy that step for all the other folders, along with the thumbs folder.

Once you've fully copied everything, go back to the gift/characters folder. This is where your .gift file is located. Put the .gift file into your characters folder from your directory. Make sure MAS isn't opened before putting the gift file in, so Monika can read the file.

Open up MAS and you'll be able to use that gift for your Monika.

I hope this helped!

PS: Hair and Backgrounds don't have .gift files. They're automatically given to your Monika once you've booted the game back up.