I started by stamping a selection of flowers and leaves. If you ink once and stamp twice you'll get a nice variation in shading. After I'd die cut everything, I just played around till I found the layout I decided to use. Some parts use dimensionals and some don't to give the whole card some depth. My best advice is to just play and isn't that the best part of card making.
This photo is not a complete card because I just wanted you to see that you can cut the flower right into the card base and choose the colour or even watercolour a background for behind it.