As you wished, just one layer of the Crop Tower for your worlds ;)

make sure, all blocks are correctly glued together, and the bearing underneath (or wherever you place it) are working together ;)

You need to waterlog the slabs, to water the field ;)

Any questions, don't hesitate to ask in the comments, or comment under my videos on YT :)

Would be a pleasure for me, if you leave a like and a subscription at my youtube channel, and a 5* rating here :)