Do NOT remove the signature on the lineart, you can move it elsewhere on the piece but don't remove it.
You are free to use it for profit/adoptables. Just make sure to credit/link back to this payhip.You can price it whatever amount, auction it, etc. Personal use as well. Use it to make personal characters, use as a reference sheet, etc.
Feel free to make any edits to the line art. (such as, adding things, changing expressions, etc) This includes drawing over the lineart to fit your style/brush setting.
Please credit me as original artist of base (YamatoPawa) and link back to my payhip where you upload your adopts/art.
Do NOT share the lineart or post it elsewhere please, the money I get from sales go towards living expenses!
If uploading to ToyHou.se, Twitter, or FA; my username is YamatoPawa as well.