First application; 50:50 boiled oil and turpentine (not mineral spirits) as both are natural products. If it is still available, you can add a few drops of "Japan Drier" to a small quantity of oil turpentine to speed up and toughen cure. Subsequent coats, use less or no turpentine, but continue with a few drops of Japan Drier. This will give you a good seal and protective finish, and more durable that pure BLO.
The first application will lift some micro-fibers, when completely dry, a light buff with super-fine steel wool will cut the fibers, and ensure a very smooth and even looking finish. Make sure to wipe or blow off before the second application.