Unfortunately, you can only upload one picture per project with the ning site. This means if you want to share close ups of your work, you have to post multiple pictures, which tend to flood the gallery, and slow up the site.
There is a way to get around it though .......
First of all ...... upload the main photo to this ning site.
Then upload your supporting pictures to either Flickr or Photobucket. These sites are so easy to navigate around, and are free to use.
Then in Flicker (that's the one I use) open your photo, select 'all sizes', then copy the code for inserting to a web site.
Once you have got your code you can come back to the ning site, and paste that code into your remarks area, adding your personal description between photos.
If you need any further direction, please send me a message here at the IMAGINARUM NING site.