Ok as hard as we try we never have perfect lighting and there always seems to be a shadow that makes things hard to see.... Dont know if its been suggested before...So Im going to suggest it.
I use a nightblaster headlamp...often when Im painting parts I might get a shadow ussually from my hand or something else that can make things kinda hard to see...well I just throw this thing on and most of the problem dissapears plus its focused lighting and not just general lighting!
These handy lil gadgets are available several places Academy Sports, The Sports Authority and occasionally Walmart...
Features a soft web elastic band
Halogen Bulb w/adjustable beam pattern
Runs on 2 AA batteries
The "Lamp" can be pivoted in several positions
and it costs roughly $8.00
I've been using this for years to help with fly tying but just tried it while working on a model lastnight!