When I first started out I had some problems with blurry photos.
Make sure you are using good film. Slide film is the best, but if you
can't use that try to stay away from anything above 200.
Make sure you are using good photo processing. I don't advise using
Wal-Mart, Walgreens, or the like. Many camera stores do their own
processing and tend to use better chemicals, better paper, and the
employees actually know what they are doing and keep the machines
clean. It's a little bit more expensive, but it is definately worth the cost.
How's the quality of your lens? You get what you pay for when it comes
to lenses. A cheap zoom lens will yield fuzzy pictures. The best brands
are Minolta and Nikon, but they can be spendy.
Are you scanning your pictures in the best manner as possible? You can't
just throw the photos on the bed, scan, then post. Each image
requires some manipulation. Don't work with the image in JPEG
format, use TIFF instead. Converting to JPEG should be the very last
step. Don't oversharpen either. If you have to sharpen more than twice
(once with low resolution images) then you may not have a great photo to
start with. My own personal standard is that if I cannot read the tail
registration number, I don't use the photo for my own website or submit
Finally, are you taking photos using the best techniques and the best
weather conditions? Cloudy days tend to reduce sharpness for my pictures.
If I under expose photos that makes them fuzzy too.
I certainly do not claim to be an expert on this, but these are the things
that I addressed for myself and I've got about 400 photos on here in the last
six months. Your mileage will vary of course.
A noble spirit embiggens the smallest man...