Make sure your photos are high resolution to ensure the best image quality. Avoid zooming in too much as this can cause blurring and pixelation. Choose an interesting subject that will be the focus of the zoom effect. The effect should draw attention to what is important and not distract from unimportant elements. Try different zoom levels to get the effect you want. Sometimes a slight zoom can be enough, while in other cases more zoom is required to achieve the desired result.