Japanese flower arrangement, also known as Ikebana, focus on the line of the twigs and leaves, rather than on the flowers themselves like in Western designs. The line of the twigs or leaves is combined with a small number of blooms and the design is complemented by the style of the container which is also a key element in the Ikebana style.
There are three types of flower designers _ designers that create arrangements based upon following floral design recipes which others originally created, those who create custom_made flower designs for each order, and those that can do both. It is not a given that the judgement will be good for each of these types of designers. However, the judging really comes down to whether or not the resulting design is liked by the customer and fits with their preferences. Since each type can receive positive feedback on their designs, it really doesn't matter which one to choose to become. It will come down to how much creativity and artistic license one prefers to exercise as the same excellent customer service skills are required for each type.