Video Building a bridge and killing cows in skyblock

[Casualpoalrbear]

What do you guys think I can do to improve my bridge. I was thinking of replacing the blocks with stairs and adding torches onto the railings. I'm also debating on what size my farm should be. Right now I'm trying to get enough dirt to make a whole island just for farming crops on. Right now I'm thinking 20x20 with a second layer underneath for me to put water in but let me know your ideas :D