I already posted this comment on one of your pictures but I thought I might as well put it here since you're asking. I just had an idea. You haven't drawn anything for the Birrin World in a while. You should totally draw Plants from the Birrin world. You could draw domesticated plants, medicinal wild plants, poisonous plants, the Birrin equivalent to trees, the Birrin equivalent to mushrooms. I know you drew them being potheads a while ago. Draw whatever drug like plants they have on their planet. Describe what exactly it would do to the body of anyone who ingested that drug. To top it off because this isn't earth you can get as creative as you want to with the plants.