before sewing them together- when you have your strips cut---lay a few out with different (combinations) and see what you like...some people make their log-cabin's totally scrappy-with every fabric different- some like things a bit more (controlled) and match their logs...as long as you have light on two sides & (darker) on the other two sides it will work --- i've seen great log-cabin's with all darks...& with all lights too....just (play around) with your strips a bit---when you have a block you like- stitch it together.
