Hi J.,
Every year I buy, plant, water and then they would die. Until last year. I spent $200 and had a "design" done for around my house. I was completely honest and let the woman know that I only wanted the design because I wanted to do it myself over time. She was GREAT! She came out to the house and meet with me and my husband and ask a lot of questions. Any plants we liked/didn't like, maintance level, colors, etc. Now, I have the design that will work in my yard with the amount of sun/shade we get and a project. The yard is yearly starting to come together!
Good Luck on your project!
PS. Grasses, sedum (live-forever), hosta, fern, boxwood, lillies, vibrnum, hydrangea, pygmy barberry, vinca groundcover, knock-out roses, magic carpet spirea, garden phlox, siberian iris, "moonbeam" coreopsis, coralbells are in 'our' plan. I can give you exact names if you would like them.