You're welcome Babs!
You can virtually practice on anything. Huai Su was so poor that he practiced on palm leaves. He turned out to be one of the most brilliant cursive script masters of all time.
The accounts I suggested show the proper Chinese classical method, and they also point out fraud videos with incorrect and misleading information in them, such as this one:
Japanese Kanji: Power & Courage - YouTube
There is one more on youtube, where one guy is "explaining" the origins of Chinese characters. I cannot find it now, but despite the cleaver setting (kimono, Japanese style room, 100 million brushes, etc.) everything in that vid. is wrong. So, be careful when you browse.