i agree with a lot before. consider a background that doesnt compete with the pen.
keep it simple to start with no props, eg the blank the pen is resting on.
if the light you are using is causing a high contrast turn it down, move it further away or diffuse it further.
start by using one light only and a reflector, understand how this works before adding another light. our brains are accustomed to there being only one light source and a photo can look wrong to us if we use more than one light inappropriately.
another light can be added but remember its only there to fill the shadow and generally its around 1/4 of the power of the main light source. i prefer a refector.
a light can also be added to cause a highlight.
i would always advice start with one light, get it right before you add any more.
i took this through a window, in bright soft daylight, reflecting back on the subject. essentially the same a using one lamp. i cant control the intensity of the sun but i can diffuse it with a white gauze or move the subject further away from the window. your light tent is no different. the advantage you have is you can take the picture when ever you want. lucky you.
this was taken with a compact and i'm saying this because you can get good results from a small simple camera. using auto mode and macro. essentially its all about using light and understanding and working within the limits of yor equipment.
happy snapping.