What should I add?

[supple minnow]

Add a storage add a roof for the barrels also add a watch tower and put an npc there add a shooting training area and each time try to put zombies there and train

[jolly bridge]

I have too much storage, the small shack under the balcony is for storage and I got a ton of storage aside that

but thanks ig

also how do I add a watch tower?

there aren't any materials or crafting recipes for that

Lol

[supple minnow]

Just craft walls and stairs then go and make something like a balcony

Use the more crafting mod or something like that

[shell mango]

be careful not to fall off