I always sterilize the box where I put my growbox in, as well as my hands
and everything with a clinical sterilizing spray before I start (it's the kind of
alcoholic sterilizer spray they use in hospitals to sterilize tables/hands/arms, you
can buy it in the drugstore, usually).
Then, what I think is very important to insure good growth and less infection is
to fan fresh air into container every day. Molds grow with a lot of humidity and I
think they don't need much air. Your shrooms on the other hand do need
oxygen, and they don't need to be super-moist. I have always had good
experiences with fanning fresh air into the grow-box container at least once a
day.
And yes, please resize pictures to something like at least 1024x768. Most people
are using 1280x1024 displays, pictures in the 5 megapixels or more range are just
annoying to watch in a forum, because the browser doesn't resize them.