It's best to post pictures in a binary group then refer to them.
You could put them in 'alt.binaries.pictures.gardens' then put a message in
this group something like "Hey all, I've got some awesome pictures of my
pond in alt.binaries.pictures.gardens. Check out mypond1.jpg through
mypond999.jpg. "
There are also websites that you can post pictures on for free. I've not
used them, maybe someone else can recommend one or two by name.

Paul