Here is a guy doing something in his retirement years we all could learn to do with our papercrete, he doesn't use papercrete but uses styro beads and fiber. Check out his home page and then look at his 1 thru 6 instructional video's and also a 3 part on how to add excitement to his pond.
http://donaldperry.spaces.live.com/ look at video's 1-6 here
http://www.youtube.com/user/dperry428#p/a/u/2/IpVDPxT1xH4 look at the 1-3 sections here.
B T B
__._,_.___