Use high resolution when possible
Higher resolution gives the model more detail for edges. Low-res images often produce softer cutouts.
Lighting makes a huge difference
Even lighting reduces harsh shadows and improves subject separation from the background.
Use strong contrast (subject vs background)
If the subject blends into the background (same color), edges become less accurate.
Crop closer to your subject
If your subject is small in the frame, crop closer before processing. This improves accuracy and speeds up results.