one of the most important parts of making journals for me is that i decorate the cover. i tend to also treat each set of 2 pages as "one set". on the right i write in slightly more normal form- several paragraphs about my feelings or activities. i like to add some symbols or decorations or small doodles to the tops and margins of this page relevant to it- which also makes it easy to remember which page is about what when im flipping back through it. on the LEFT side i often leave blank, or draw a big picture, but the most important thing i do with the left side is that i place "stray thoughts" there- contenxtless musings or reminders that arent for being in a paragraph but as standalone little statements.

dont feel like you have to adhere to any particular pattern when making a journal. make it any way you want, be inconsistent, but the most important thing id suggest is that you doodle often around your words in it.