You don't have to make a new one every time. Once you sign in, at the top of the page it'll have Deviant(your name) with a little down arrow beside it. Run your mouse over it and it'll give you a list. On the list go to Settings and comment signature. Once you save it it'll be on every comment you give. If you ever want to change it, just go back to settings and so forth. Hope that helps.

yay! i got it :) thank you so much XD

You're welcome. If there's anything else you need help with just let me know and I'll see what I can do.