To be honest, I have not seen stamps to really show the status for this but I have seen it on folks page in sections with simple normal text. That is when I got the idea to make this into a set of its own to go with the rest of the ‘Art Status’ stamps.
With Adopts becoming more and more popular, I hope this can be found useful for some. Anyways, for those who do make Custom adopts, this be seen or taken for two reasons (imo); they are open to making you a custom design - you provide colors and such and they make it just for you instead you buying a design already made and/or the other way I see it is the same as the first bit but perhaps they like to give you the option of getting your own new lineart for your adopt too instead of just a design on existing lines be it their make or free-to-use ones. All in all, the concept is the same so for details you just have to ask them yourself and see how they go about their "customs".
I believe the meaning for 'open' is self-explanatory.
Free Members can use Stamps too!
Yes, it is true! Just use the thumb code and paste where you want the stamp to be. Easy Tutorial if you are not sure how to get it!