Another good way to get practice is to go to an LLL meeting and watch other mothers  nurse there babies, and then follow lead. Then there is the sling. When my son was younger, I would put him in the sling when we were at the mall, and he would nurse there contentedly, while I walked around browsing. People would peek in to see baby and what he was doing, thinking he was just sleeping. They never noticed anything different, unless I told them.
Slings are a great alternative to backpack carriers.
They keep baby close by, and are very safe. One other thing I like to do, now that my son is older, and not so accepting of a blanket over his head. I put a blanket up just as I latch him on, then I remove it. Problems are still posed when he gets distracted and pulls off to look at something, but I just pull my shirt down quick when this happens. Overall when nursing your baby, it is important to remember why you are doing it.