Drafting and planning + Research into similar products - Ending

To End the trailer i am going to have a coming soon sign to show to the viewers that they wont have to wait long to see this film. When constructing this end sign, it is important that the: Font, colour, size and duration is perfect so people still feel spooked after seeing the trailer. If one of these elements is off then people could feel that it is just silly and ruins the trailer. In order to find what i am after, i need to do research into other products to see what they have done. This is the Insidious trailer ending.

I felt this was Quite good, however it seemed a bit too plain for my liking.
This is the Jessabelle trailer ending

I feel this is prefect and gave me a great inspiration for the ending. I intend to have a picture of the back ground and slowly have Lucifer and Coming soon fading in.