Help with Wedding Invitations

I would like custom wedding invitations with art drawn by my cousin. I would like a way to print these invitations with a gate fold print (i.e. splitting up the artwork). The outside of the invitation would have Disney's Cinderella castle on it (see example). The inside would have the grand Floridian below our wording (see example).

The final product will need to be an editable pdf that I can use to print the invitations.

Please feel free to ask any questions! Please let me know if I have selected the wrong place to post on this website. I will give the wording and details for the wedding for the inside as soon as the project is accepted.