I have posted the document which is in here first so that it can be promoted more easily. This here is the place where all your stories made from the prompts can go into and be posted here! 

I don't mind what era, how many characters you have to create or what categories your story goes in, but as long it is a crossover with any one or more of the fandoms listed below (in case you didn't catch them on the document):

Back To The Future

Doctor Who 

Captain EO

Have fun!