Ploppy

if you wanted more light trials then what you could do is mount your camera on a tri pod, take 4-5 shots using your 3 second shutter speed (taking care not to move the camera at all) then you can merge them all together on photoshop. If you have photoshop its as easy as stacking your 5 shots on top on each other and using the blending mode and selecting linear light (at least i think its linear light without checking)