Very nice work, but I have an alternate method of staining basswood that won't swell the wood. I don't know how it interacts with white glue, but I'd recommend staining before gluing.
Mix 90% isopropyl alcohol with a small amount of ink (black and/or brown) to create a stain. I would say to keep the ratio high (~9:1), and give selected boards a second or even third coat if you want some darker.
You can also use this with some acrylics, but not all colors seem to interact well with the alcohol. I'll attach a photo of a sculpture, with one side stained with ink and the other acrylic.
Charles
