pizzabutlers
Hi,
You can add Image to existing Banner Slider, you can go to Design > Banners & Sliders > Sliders Button
from top right, or after login to admin you can go http://your.site/admin/igniter/frontend/sliders
you can see the list of Sliders or default by one.
so that you can create new one as you want. and assign it in your theme.
Design > Theme > Edit > Page
find home page, Click on Slider Component, Select your Slider from Select box and save.
now you are done!