Try using your water hose to outline the area. It gives you an excellent picture of how it will look and is easily moved. Never build a bed without at least a rough drawing. It's easier to use an eraser than a shovel.
Daffodils produce a 'slime' that injures tulip blooms.
If you wish to mix these two in the same vase, first place the daffodils in another container of water for a day after cutting, then rinse off the stems and add to the vase of tulips. Adding 6 drops of bleach to each quart of water also helps. If you dump wood ashes in your vegetable garden spot you should be aware that they will raise the pH of the soil. A little wood ash is beneficial, but a lot is not. Draw a map or plan of your garden and make you some copies.