F3 Template help

[HK2014]

Hello, i need help on painting on F3 template, i can't find the correct layer to paint on. For example, on the F-Ultimate template, there is a "color fill" layer, so as expected, you can paint your car without overflowing on the background. However in the F3 template, there are a lot a layers but i can't find the one where you can freely paint your car without overflowing everywhere on the background. Did i miss it somehow or is there a trick to do it ? thanks

 

[Reb.Ellion]

you can add a new layer to paint on it.

 

[HK2014]

i don't think you understood my issue, if i try to paint a on a new layer (or even an existing one) on some parts of the car, it will add colors on the parts AND it will overflow on the background, this does not happen on the ultimate template wich is why i asked for help