How do i replace the picture of a CIV for my mod?

So i made this scnerio and i used the Vanilla civilizations in it, but now i want to change the diplomacy screen for each civ to a custom 2D Picture instead of the original 3D Image. Does anyone know how i can do this? I want it to be included in my mod With the scenario for Publishing it on the steam workshop.

 

Leaderscreen.xml (import into VFS, DON'T have an onmodactivated->updatedatabase entry)

Code:

<?xml version="1.0" encoding="utf-8"?>
<!-- Created by ModBuddy on 8/23/2017 8:34:33 PM -->

<LeaderScene FallbackImage="Art/MyFileName.dds"/>

(Yes it is correct that there are no <GameData>-Tags here! This assumes that your leaderscreen is placed in a folder named 'Art'.
MyFileName.dds should be imported into VFS as well.

Lastly, in Leaders.xml (where you define your leader. DON'T Import into VFS. DO have an OnModActivated->UpdateDatabase entry):

Code:

<?xml version="1.0" encoding="utf-8"?>
<!-- Created by ModBuddy on 7/19/2017 3:36:49 PM -->
<GameData>
   <Leaders>
        <Row>
            <Type>LEADER_I_HAVE_A_CUSTOM_LEADERSCREEN</Type>
            <ArtDefineTag>Leaderscreen.xml</ArtDefineTag>
            <!--SNIPPED TAGS-->
        </Row>
    </Leaders>
</GameData>

Where Leaderscreen.xml is the filename of the other XML file

NOTE: Filenames can be anything you want

 

It will have to be done as an Update in the <Leaders> table if using existing leaders.