- 1). Measure the amount of fabric you will need to create your window treatment. When measuring your fabric, you will need to account for the length you want your window treatment to be, but you will also need to add at least four inches at both ends of your fabric for hems or details such as a pocket for a curtain rod to slide through. To account for width, you will need to multiply the size of your window by 1.5 to three times the size to account for your desired gather.
- 2). Choose the fabric you will need for your window treatment. Most fabrics are sold by the yard in varying widths. Once you have determined how much fabric you will need to complete your project, multiply that number by the price per yard of your desired fabric. This will help you price the cost of raw materials. If you are using any kind of liner for the underside of your window treatment, include this material in your costs as well.
- 3). Price any trims or decorative detail you will need to create your window treatment. This may be ribbons sold by the yard, buttons sold individually or in bags, embroidery materials for a handcrafted look or even fabric paints for a stenciled design. You may also need to purchase a specific color or strength of thread to complete your project. Include these materials in your cost.
- 4). Determine how long it will take you to complete the project. The more intricate the work is, the more time you will need to make it right. If possible, break down the time you will need to complete the project into hours, even if you do not plan on charging by the hour but by the project.
- 5). Use this formula to price your project: Cost of window treatment materials + your desired profit from completing the project. Divide this number by the number of hours it will take you to complete the work. Round this number up to the nearest whole number and charge by the hour. Or, multiply this number by the amount of time it will take you to complete the project and charge by the project.
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