If the flowers appear too bunched up, try cutting them at different lengths for more variety. Don't worry if some blooms don't stay in exactly the right position at first. Continue to the process by adding more flowers, adjusting their height and position as you go. The stems should all fit comfortably in the neck of the container and begin to hold their positions better as more flowers are added.
Budget Issues: Hiring professionals is often considered expensive but there is also a solution for this issue. If your budget is low then experts can give you the best floral decoration without spending too much in unnecessary things. But, in case of amateur chances are high that your most of the budget get wasted in the purchase of needless items and your decoration gets only satisfactory which you don not want after spending thousands of dollars.