Hey Joanne & Jessica!
Here is how I do my seed tapes. I cut old newspaper into one inch long strips and I only use the black & white sections since colored print ink can emit toxins into your soil.
Then I will make a glue using 1/4-cup water to one-cup all-purpose flour. Sometimes I will add 1/4 teaspoon of water-soluble fertilizer to each half cup of paste, but I don't do this all the time because I may not feel like mixing any up.
Then I take a yardstick and marker to mark where the seeds need to be placed on the strip.
Then I dab each seed with the with the flour-water glue and stick them in the center of the strip. I make sure the seeds are spaced evenly apart, by checking the back of the seed packet or researching the recommended amount of planting space between each seed if the seeds were given to me.
When the glue is dry, I roll up the strips and place in separate sealable plastic bags and add one tablespoon of salt to help keep the seeds dry. I also put name of the plant and the care directions in each bag so I will what to do when I plant them (sun exposure, watering, etc.). Then I store in a cool place, such as a basement until I need them.
When it's time to plant the seed tapes, I lay each strip seed side up in rows and plant it just a tad deeper than recommended. Then I cover the strip with soil and water them. I hope this helps! It's easy to do!