Answer to Question 1
Any one of the following: repeating the main color, or the strongest line, or the dominant form, or the main texture, or using a container that repeats the colors and texture of the flowers.
Answer to Question 2
Tunicate bulbs have dry outer layers of membranes that are the result of last year's growth. The layers are leaf-like membranes and appear to have concentric rings when cut into cross sections. They propagate naturally by growing small bulblets around the bulb.
Nontunicate bulbs have layers of scales. Each of the outer scales can be separated and planted.