League of legends Darius axe, A newbie showing his first work and asking for advice

[figalls]

This is my first replica, it is meant for a Drius cosplay, it is not finished yet and I need some help.
I have used a cardboard basis with some reinforcements and I'he applied expanding foam on it, finally I've put a newspaper with glue layer.

Firstly, I show a step by step gallery of what I have done until now:

http://www.therpf.com/attachment.php?attachmentid=155914&stc=1&d=1366033292
http://www.therpf.com/attachment.php?attachmentid=155915&stc=1&d=1366033292
http://www.therpf.com/attachment.php?attachmentid=155916&stc=1&d=1366033292
http://www.therpf.com/attachment.php?attachmentid=155917&stc=1&d=1366033292
http://www.therpf.com/attachment.php?attachmentid=155918&stc=1&d=1366033292
http://www.therpf.com/attachment.php?attachmentid=155919&stc=1&d=1366033292
http://www.therpf.com/attachment.php?attachmentid=155920&stc=1&d=1366033292
http://www.therpf.com/attachment.php?attachmentid=155921&stc=1&d=1366033292

However, I don't like the newspaper layer so I would like to know what to put in order to have a good surface to paint.
I wonder if kitchen paperwith glue would be good idea.

Thank you very much for your attention and sorry about my poor english.