'fear of the dark'

My intial idea for photos based around the idea of the fear of the dark was to take places such as closits and under the bed, asosiated as a child with monsters and fear and to use lighting to create a look that the light is coming within the area. To start of with this idea i did a practice shoot as it was getting dark of my closit using the only detacable light i have which is a small red alien that glows, and trying to work out how to create the look i wish to achieve as im not very confident with lighting. I basically used long exposures to measure the effect it had on the image, my first quiery was that the light i was using wasnt bright enough to give off the effect that i wanted to achieve. i would need a much more powerful light so i may have to experiment with getting out a lighting kit to see how that would work. Then i also worked out a problem that the longer the exposure the more light the room would getbut the brighter and better the light in the closit would be. Hopefully by using a more powerful light that i wouldnt need the exposure longer to get the same effect but as my liught wasnt as powerful. I also think that the room was already just abit to light to get the effect i wanted, it wasnt quite fully dark. So next experiment i want it darker, with a bigger light. Im rather lucky that my house at the moment has alot of unusal closits that i can use or experiment with and i can also translate it to under the bed too, tho this would be more tricky as i wouldnt be able touse a lighting pack for risk of setting fire to my bed.If i go for later in the eve and darker i would prob have to use a filling light so its not to dark but bouce it off a wall out of shot? 
I dont like the layout and the framing of the photos but as they are only experiments i dont think thats importnant.