When I get some cool new fabric patterns, I make a color copy of them and then cut swatches from the copies to put in my journal. Easier to glue in, doesn’t waste the actual fabric, and keeps the book flatter. I also use my paper “fabric” pieces to work out designs in my journal. Lots easier to cut shapes and glue-stick them into a test pattern, than it would be to sew the real fabric or draw an accurate rendition of the fabric pattern.
2. Here’s a bit more elaborate approach. Say you have a design using four fabrics. Place your four fat squares on a copier so they each take about 1/4 of the page. Make a letter size color copy. Then make a black line drawing of your pattern that will fit in 1/4 of a letter size page. Glue four copies of it on a single letter size of paper and then make a copy of that 4-up right onto your fabric copy (just run the page through again). Cut out the sections of each design, and you will have all pieces in all 4 fabrics to arrange and rearrange to your heart’s content. Glue different renditions onto a single journal spread so you can choose your favorites - or use them all in a quilt!
3. You can also copy that 4-up of your design onto Sheer Heaven, transfer it into your journal, and then experiment with color schemes using color pencils, markers etc.
4. Obviously, an art journal is also a place to develop your patterns in the first place, and to collect photos of favorite quilts, quilts you want to try, and all the tips you gather while reading your quilting magazines. There are endless possibilities, but this is a start. Feel free to Comment with your suggestions.