(SOLVED) PPF file is bigger (over 400KB) than orginal/patched ISO

[NaoKat]

 I'm trying to make a ppf file of my patch using PPF Studio v.1.0.1
 I've followed the instruction step by step such but my PPF file ended becoming over 400 kb.
 Is it normal?

Edit: The source of the problem is the patched .iso itself

[3lric]

https://ffhacktics.com/smf/index.php?topic=7457.0

[NaoKat]

 I have followed all the steps from the tutorial but my ppf file size became larger than the modified/clean iso.
 I have padded the original ISO size to match my patched ISO size then used ppf studio.
 Am I missing a few steps?