Hello Im a 12 year old furry who is intrested in makeing fursuit head bases so I can save up for a?

It depends on how your selling it, obviously you can sell anything no matter what your age (unless it's adult stuff, as so on.) but, it depends on how you're selling it. Because if nobody sees it, then your not able to sell it.

So of course you can sell it, but you'll have to have the skills to make a fursuit head base & tail.

Just do what you believe, and see if anyone will buy it!! it doesn't matter what your age is in this category. Have fun :)