To achieve the best engraving results from your photo, you should consider several adjustments before sending it for engraving. First, ensure the image has high resolution; ideally, it should be at least 300 DPI (dots per inch) to capture fine details. Next, convert the image to grayscale, as most engraving processes work best with black and white images. This will help you assess the contrast and ensure the image translates well into an engraved format.

Adjust the brightness and contrast to enhance the details. Increasing contrast can help define edges better, while adjusting brightness ensures the lighter parts do not wash out. Use image editing software to apply these changes. Additionally, consider simplifying complex images. If necessary, use filters or effects to create a more defined silhouette, focusing on shapes and outlines rather than fine details.

Finally, test your adjustments by previewing them on a smaller scale. This gives you an idea of how the final engraving will appear. Remember, the key is to maintain a balance between detail and clarity to ensure the best possible engraving outcome.