Welcome aboard, your helmet looks good
keep it going
You might get a better smooth finnish on your helmet if you use a spot putty to get it really nice but so far you're helmet looks great
How to make mando armor (chest, cod piese)?
Have a look round the site there's loads of threads on making armour... http://www.thedentedhelmet.com/f25/u...us-sizes-7825/ and there's a Star Wars Wiki with loads of pepakura files on there Star Wars Pep Files - Pepakura File Wiki
That should get you on track