When you use blended colors you can use both colors on the needle at the same time but only do half a cross making sure it lays the right way.
You can also do one color (the darkest of the two) for the first leg of the stitch and the lighter color for the second half of the cross stitch. (for 32 count over one this method works best)
Use one strand of floss for back stitching!
Have fun stitching!
Please note that pattern instructions that come with a kit will include instructions, threads, fabric, etc, ONLY for that specific kit item, and the instructions may not contain all of the options that are included if you separately buy just the chart of this title.