how 2 create"custom made product" feature fr. choice of pics

I need help with installing a feature were customers can choose different panels that make on product. Example: Step 1: Choose 1 front panel out of 8 different panels shown in separate photos. Customer chooses front which pops up in one extra window. Step two: Choose 1 left panel. Customer chooses left panel out of 8 different panels shown in separate photos and that panel joins in the extra window. Step Three: Choose right panel and that panel also shows up in the pop up window. In the end I need the pop up window to show the finished product (6 Panels of which 3 are custom chosen) which then is what customer will order. You could say: Once he chose 3 Panels 3 other panels will automatically join OR these generic 3 panels are already in the pop up window from beginning. Now one click, and customer goes to check out with this custom made item. This feature is all I need to ad at this point. I simply don’t know how to do it.

Hey,

Could you please elaborate on the technical side of the issue?
What part of this feature is the issue. Is it selecting and adding images, popup window?
I’m not sure I follow the idea with popup window. What do you mean by panels? Is it just content of image or some another vital part of user interface?

Best regards,
Max