There are several suggestions I might offer/give you ...
Use the larger tent to allow room in your setup. Space away from the edges and background is a good thing here!
Pull the pen forward as much as possible to avoid (or try to avoid) the definite crease where the cloth background curves upward. You can always adjust the framing in the camera if you come close to the front edge and almost off the background material in the viewfinder.
The smaller F stop you can use is also better as it increases the depth of field and thus enhances the focus. F32 is way smaller an aperture than F2. Just increase the time of exposure to compensate and let the camera do it's work.
Be sure the lighting used does not directly enter the front of the lens as that will wash out some of the colors in the picture.
Use a heavy tripod to hold the camera and use either the timer to release the shutter or a shutter cable - one that is comfortable in length to your setup.
Keep the photo tent setup on a table that offers you as much comfort as possible. Bending over tends to make one not to want to do the photography. I used mine at about mid-belly in height to avoid bending over any at all.
Push a small gauge wire up through the cloth and bend it to allow it to be inserted into the pen tip. It will hardly be seen if it is small enough. This eliminates any object used to hold the pen at an angle. (I think you want to photograph the pen you just made and not the block of wood.)
Practice with the light placement to avoid 'hot spots' from the tent material ... closer vs further away type of thing. If a shadow is at the bottom of the pen, put a light underneath the background material and thus weaken the shadow(s).
Be very sure the lights are color matched to your film. If you are using digital, be sure the camera is set to the type of lighting used. Usually this is stated on the lights in Kelvin Degrees (type of light color). 6000 degrees Kelvin is quite color balanced for daylight film and is available in the digital camera setup selection.
Be sure the lights are up to temperature to allow all the color spectrum to be available. Turn them on several minutes prior to shooting. Flash photography avoids this all together BUT adds a tad bit of difficulty in first time placement.
I believe that both your photographs show decent composition, BUT are just a stop or two overexposed. The clips and barrel ends are to brightly lit. To fix the clip - turn the pen a little bit to avoid such a hot shop on the bright metal. It's kinda like looking at a reflection of the sun in a mirror. The metal tip - well, that takes adjusting the exposure and the light placement. Ahhh, the beauty of Adobe Photoshop ($800) or one of the others - just as expensive.
There are more things you can do, but space is limited here for a class in techniques, etc. Besides all that I am thirsty and need to go in search of my Modelo beer... Just e-mail me if you have a problem and I'll do my best to share what I know about 8 years in commercial photography with you!
BTW, what camera and lights are you using? I should have asked that first thing, but the lack of beer has my mind dulled a bit! Like my skew tool... it don't work to well when it's the least bit dull! [

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