STEP 1. Remember they should be in keeping with their immediate surrounding. If you have a formal, precisely laid terrace connected to the steps, use similar material for the steps.
STEP 2. If your steps are some way from the patio, further into the garden, they could be made from different natural materials such as logs or natural stone, to reflect this.
STEP 3. Make the most of a change of level by incorporating other features such as planting within the cracks of the steps to soften the line, or cascade planting from a raised bed at the sides of the steps to create interest.