Here is the final technical illustration of a canary. I focused on the entire bird (side and wing structure) with cutaway views of skin, muscle, skeletal structure of the wing, and organs.
The purpose of my illustration is to educate about bird anatomy. The audience is high school biology students. It will be in the format of a poster. I chose not to include anything in the background because I didn't want anything to distract from the annotations and from the ultimate purpose of learning. I also left it white because I am going for the style of a vintage scientific illustration; most of them do not have backgrounds.
I drew the birds and the insides separately using artist quality Prismacolor verithin colored pencils and a thin Sharpie. I then put the images into Photoshop to make precise selections, saved them as a PNG with a transparent background and moved them over to Illustrator. There I put the birds and parts together and made the annotations.
I changed the dashed lines from a medium grey to a dark grey so they are easier to see on top of the bird. I left the annotations medium grey so they don't distract from the illustration.