Maybe those pictures will help you...
First pic using TWO regular light bulbs (sunlight it claimed). I was still not satisfied. Then a friend of mine who is into photography told me that I should get those special bulbs.
Using the better light bulbs... they were not that cheap. $13 each I think. Result... using same camera and background along with two special bulbs on each side. And one regular bulb at the top...
!
You probably will chuckle... I convert my paint booth into a photo studio.
Again, beautiful work! Looking forward to follow another masterpiece of work...