Help me make a livery for a game

[denzjos]

The lines on your UV layer are used to cut out the contours, where to cut in and fold lines. They are needed to make the car. What you can do is give this lines a little lighter color than the color of the area around this lines. After you colored all the areas you can set the UV layer on mode 'overlay'. The lines are then shown lighter. If needed, use the opacity layer slider to make the lines even lighter.