External factors influencing our teaser trailer

We decided, as a group, that there are some factors that may prevent us from being able to film some of the shots we want for our teaser trailer.
1. Weather - there are 3 shots we will need to film outside and we don't want it to be raining as this will affect the quality of our shot and may harm the technology we use (camera). This could also be an element of health and safety if the camera gets wet.
2. Effects - For the end shot, we wanted to show a glass smashing on the bathroom floor, however this is also an element of health and safety because it is dangerous to be filming around smashed glass; for example, someone could tread in it.
3. Permission - we will need to gain permission from the concerned media institution to use their song for our soundtrack. This could be a problem because they might not get the email in time or they might not read it etc. We will also need to gain permission from our friend to use her bedroom and bathroom for filming and it is extremely important that we gain permission from the Vicar of Paulersbury Church to film in the grave yard.