1. Grow primaries from finger cuticles.
2. Sprout alula along the tops of thumbs.
3. Plant a bed of coverts to hang from arms.
4. Seed scapular feathers along shoulder blades and axillaries in armpits.
5. Fuse clavicles and graft coracoid and attached carina to scapulas at base of cervical vertebrae.
6. Reduce the lengths of femurs, fibulas and tibias — prune and regraft if necessary — then bind femurs close to rib cage.
7. Hollow bones with care.