If one big wall won't do, several low walls with level terraces between may be the right solution. Consider paving a level to create a patio and a comfy seating area. An inviting midslope patio is a great place to sit and survey the rest of your garden.
How to create a cottage garden: This laid-back garden style is colourful, charming, practical and a cinch to plant. Bonus: It’s easy on your wallet too! plus I love the path idea down the side of my house