Help with mod player

[Brittdf]

Hi there! I am new to the modding world. I use an old 360 to play GTA V. Anyway, I successfully tweaked the characters skills, weapons and such using Horizon. However, I have a question when it comes to mod player/skin/ character..whatever it's called.

I want to play as Harley Quinn.
This is the link I used to download her.
https://www.gta5-mods.com/player/harley-quinn-injustice-2-add-on-ped-replace
Once unzipped, I tried dragging the files onto Horizon but it says invalid file. Can this not be performed through Horizon?

I've tried installing OpenIV..but when opening, I get the error d3dx9_33 not found. I've uninstalled and reinstalled.

I am lost. I tried-and need help. Thank you guys and gals.

[ikt]

Sorry, GTA5-Mods doesn't support console modding.