Hi Betty,
Great setup for a first light tent! And I just love those dolls (oops, let my wife not hear this

).
You mention you cut several holes in the sides, and the back. Try to use several lights, shining through the lining, for a different kind of lighting, and just play around a bit with the lighting setup, until you like the result in the pictures. Don't put the lights too close, because that results in a lot of contrast (unless you prefer it that way).
The big trick, btw, with light tents, is to make sure you only focus on the object of interest, and make the depth-of-field (DOF) such, that only the objects to be photographed are sharp. That way, the sides or back do not get into sharp focus. This also means that the tent has to be relatively big compared to the object you're making a picture of.
Try making a picture of a single doll, right in the foreground, towards the front edge of the tent, and use aperture priority mode on the camera, or better still, manual mode, make sure you use a large aperture (small number), and focus just before the point you really want to have sharp in the picture. This because generally there is something a little before that point, and after that point you want sharp too, but DOF is less towards the camera than away from it.
To spruce things up even further, what you could do is find a little piece of cloth to put the doll or pen on, or a glass plate or something (perspex is also fine). In the latter case (glass or something), use something to lift the glass from the ground level in the light tent, and make sure you don't get the edges of the plate in the picture. You can combine the two techniques as well, if you like (glass plate, cloth, etc.).
Another thing you can do is use a slightly bigger piece of paper, or thin cardboard, attach it to the front on one side, and to the top at the back, so it curves up towards the back. This provides you with an even background that gradually drops back.
It certainly looks like you found another hobby here!
BTW, if these were handheld shots, try to put the camera on something sturdy, like a few books, making sure it can't slide off of course, and maybe prop one end slightly up. Also, try to use the timer to get the shot, rather than trying to hold it still while pressing the shutter release button.
HTH, and thanks for sharing!
Warm regards, Wim