The place to start when you are designing your dream kitchen is with a dimensional diagram of your kitchen space. On a large piece of graph paper, draw the outline of the kitchen space, including any doors or windows that you will have work around while you design your kitchen. Accurately mark where your plumbing and electrical supplies are located. You can move plumbing and electrical supply points, but this involves more time and money, and it is always easier to accommodate existing service supplies into your design, if practical.
It can be easy to envision how your new kitchen would be designed and how it could complement the interiors of your home. However, most kitchen designs available in the market today are pre_made, which means you have limited options such as in where you want to store your kitchen tools, pots and pans, utensils, etc.