Health bar green part not going into the bar

Hello,
I’m making a game and I’m having problems with the health bar. I want to make it so that the green part will go into the bar itself and I searched everywhere and didn’t find a solution so I came here. I also tried to make a green part that has the shape of the bar but it scaled weirdly. The health bar is a Billboard GUI on top of the player.

Health bar:

Health bar with the green part with the shape of the bar when you take damage: