Use Natural Light

Don't use your flash. The flash will give you harsh lighting. Instead, find natural light to brighten up your picture. Even if that day is overcast, you can use it. It might feel gloomy to you, but it will give your picture soft lighting and make it beautiful!

If it's a bright sunny day, the porch lighting is great to be able to naturally filter the light. Or even find a tree with shade to help filter it.

Find a Good Background

Your beautiful family needs to be the focus of the image. Make sure that the background is simple and a different color than the clothes your family is wearing.

Put Your iPhone/Camera on a tripod

Using a tripod will help to keep the camera steady and keep your image from being blurry.

Use the Timer on Your iPhone/Camera

Using the timer will make it to where no one is left out of the family picture. Set the timer and then go get in your place!