Your campaign looks very good and if you are already at 41% but may be stalling isn't going to start taking off again by adding more pictures or worrying about the pitch not being clear enough.
What may be happening is that you are running out of audience.
You need to quickly jump back on to the marketing bandwagon to push more interested parties your way.
If it's not too late in your campaign - ask Hyperstarter to help, he has some good packages