How can we smoothen the texture of a biodegradable paper from banana leaves?

We were able to produce a biodegradable paper from banana leaves and used paper, but the problem is its texture is way too rough.How can we smoothen the texture of a biodegradable paper from banana leaves?
This may help


http://www.funsci.com/fun3_en/paper/pape鈥?/a>


http://www.pioneerthinking.com/makingpap鈥?/a>


http://www.tutorials.com/06/0697/0697.as鈥?/a>