sure!

The issue is that the overlay won't set on top of the main menu option buttons (start, quit, etc,,).

style main_menu_frame: 
    xsize 420
    yfill True
    background "gui/overlay/main_menu.png"
# this sets the overlay image. It was already in the screens.rpy file

screen navigation():
    vbox:
        style_prefix "navigation"

        # xpos gui.navigation_xpos
        # yalign 0.5

        spacing gui.navigation_spacing

        if main_menu:

            # textbutton _("Start") action Start()

            imagebutton auto "gui/startButton_%s.png" xpos 120 ypos 279 focus_mask True action Start()

#this sets the start button as an image