Hey, welcome to DeviantArt! I see you pretty new here, so if you have any questions, feel free to ask You have great art works, keep doing what you've started and good luck for the future.
"Llama badges are one of the many fun badges that can be found within the community. Deviants can send llama badges to other deviants and also purchase accessories for llamas using DeviantArt Points." So this is just a fun thing that you can give and receive. If you think somebody is nice, or talented just give him/her a llama.