If I was you I would depressurise the fuel system by pulling the fuel pump fuse out and starting the car, wait till the car dies, then try and start it couple of more times to make sure It's depressurised. There will be a little bit of fuel spillage but not much. Once the new filter has been fitted, put the fuse back and turn the ignition on but don't start the car, do this a couple of times this will fill the filter up. Then start the car and check for any leaks near the flitter.