I got a CoolPix 5000 when they were discontinued for the 5400\'s. 5 mega pixel and does so much more than mini work. (I like to shoot wildlife too.) Considering that we are forced to reduce to 400 pixels wide and 100 k large, 1 or 2 megapix will do fine for shooting. The big key is how well the macro function works.
Check out my sig for a link to a photo difusion tent. Mine is not that elaborate - a window sheer and some dowels.
Motion is your enemy: Use a tripod. Use delayed release. (push the button then 30 seconds later it takes a pic.)
Set your shutter speed to as slow as possible (1/8th second or so). Alternately, but not as effective is to set the aperature as tight as possible (f-32 if you have it.) This will increase the depth of field so that the mini is in focus.
Lights are your friends (read the excelent article
here
I like the halogenA\'s but a lot are also using the Reveals. Less color correction in either case. Swing by the local mall and look in at the photo studio. Notice his lighting. Recreate that in mini.