I have my squares ready to go, 15 rows of 12, (you can ignore the numbers and letters and dots in the squares, that's how I design a pattern) I've only ever sewed rows but it tends to get all wonky. I've read that it's much better/easier to do chunks instead of rows. Sounds great but I'm struggling with where to start and how to break it up into chunks, should I do it like the second picture and make blocks of 4 starting with the first two rows and keep doing that with rows 5-8, and so on? Should I do that but start in the middle and work up then down? Like on pic 4?
Should I I make a bunch of squares and a strip in the middle like pic 3?

Feel free to draw something better. I'm totally overwhelmed
If the grid doesn't make sense, pic 5 is the un-simplified version of the pattern, I don't have the space to lay it all out when I'm designing a pattern so I use graph paper squares which is a terrible way to do anything 😊.