Iron farm in Minecraft?

I've had an iron farm for a long time. In itself it works quite ok, but I've wanted to improve it a bit for a long time, I could theoretically build several next to each other or they are no longer so efficient.

I'll attach a few pictures of the farm!

Thank you for the answers!

Have a look on the YouTube channel Spark of phönix who builds such machines

You can build multiple iron farms next to each other without losing their efficiency. However, you have to keep a certain minimum distance. The villagers of the two farms must be at least 10 blocks apart.

OK thank you