I Need some Help On an Addon I'm working On

[Zireko]

Currently I'm just practicing and trying to build a very simple addon called ZBar. I will later anchor it to the bottom center of the screen. this addon is just supposed to add an image that can be moved around on the screen currently. It's a custom image and I've converted it to tga using power of 2 like I've read, (tga img size is 512x512). I'm not sure why the addon isn't currently showing up. I'm still very new to coding and I'm learning wows API I came from building a few addons for Elder Scrolls Online. Any way here is the current code I have and I've attached the addon I've built so far below.

Toc File

## Interface: 60000
## Title: ZBar
## Notes: A simple skin addon that allows you to place your ui into it.
## Author: Zireko
## Version: 1.0
 
ZBar.xml

Xml File

<Ui xmlns="http://www.blizzard.com/wow/ui/" 
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
                   xsi:schemaLocation="http://www.blizzard.com/wow/ui/ 
                   ..\..\FrameXML\UI.xsd">
    <frame name="barAWindow" parent="UIParent" moveable="true">
        <Size x="800" y="300"/>
            <Anchors>
                <Anchor point="CENTER">
            </Anchors>
            <Layers>
                <Layer level="BACKGROUND">
                    <Texture file="ZBar\ZBarImgs\barA.tga" setAllPoints="true"/>
                </Layer>
            </Layers>
    <Scripts>
        <OnMouseDown>
            self:StartMoving()
        </OnMouseDown>
        <OnMouseUp>
            self:StopMoving()
        </OnMouseUp>
    </Scripts>
    </frame>
</Ui>

My question for my code is simply "What am I missing and why do I need it?" please explain in full detail so I may learn more thoroughly.