Cleaning/Restoring old portrait?
When my mom passed 7 months ago, I was the only one who wanted a portrait of our grandmother. Unforunately, my parents were very heavy smokers, and the portrait is very soiled with nicotine stains. I want to get it cleaned/restored, and copied for an uncle. I got an estimate today of $285.00 to clean, restore and do fresh oils on the portrait. Right now, that is out of my range. Is there anything I can do to clean it myself? I know if I just have it copied as is, the stains will show up, which is not what I want.
Please, any help?