I've been doing a lot of scanning with some old negatives here is summary of what to do and make the best of scanning all those negatives.
"In this tech-savvy world we can return to 100%-analog-photog-goodness and transform them to digital with some simple scanner-wizardry.
This handy guide will show you how to scan your film, merging all of the sweetest parts of analog with the ease and shareability of digital."
Read more here at PhotoJOJO
Here are some of mine, you can see on the contact the dust, and the one below edited. Film 120 shot with HOLGA.