Before applying an AI style to your own painting, make a clear reproduction with even light, a stable camera and a view approximately parallel to the artwork. Solve glare at capture where practical. Keep that reproduction separate from any later interpretation; removing a white reflection with generation does not prove the original brushwork underneath.
Decide which version you need
A portfolio reproduction should describe the physical work faithfully. A promotional reinterpretation can intentionally change its medium or atmosphere, provided it is labeled accordingly. Make the reproduction first, because a stylized result is a poor reference for checking the painting's actual colors and marks.
Record whether the photograph includes a frame, glazing or only the artwork. Keep the artist's signature and intentional texture protected. A signature that becomes prettier but different is not an improvement to a reproduction.
Arrange the capture around the painting
Support the work securely and keep the camera steady. Align the camera with the plane of the work so one side is not conspicuously enlarged. Choose illumination that shows the surface without a large bright reflection; inspect all four corners for uneven brightness.
The National Portrait Gallery's guide discusses diffuse lighting, camera support and reducing reflections from glazing. Its advice is a starting point, not a guarantee that a polarizing filter or window light suits every glossy, metallic or deeply textured work. Test your actual materials, and avoid unnecessary handling of fragile art.
Take one full image and a few detail views if the marks matter. The detail views can help distinguish a real texture change from an artifact in the full-frame photograph. Avoid clipping bright impasto highlights simply to make the surrounding wall lighter.
A hypothetical watercolor poster
Imagine an artist photographing an owned watercolor for an exhibition poster. One phone capture has a white glare patch over a painted branch. After moving the light and camera setup, a second capture shows that branch clearly but has a slightly skewed border. The artist chooses the clearer source and performs a restrained perspective correction on a copy.
This is an illustrative procedure. The artist checks the original painting and the correction, then uses the accepted source for an Imagild creative treatment. The poster can label the new result as an interpretation while the portfolio keeps the reproduction.
Limit editing to the declared purpose
Crop away the surrounding room if needed, correct modest alignment and compare color in consistent viewing conditions. Do not automatically remove surface irregularities that belong to the work. If glare completely obscures a passage, reshoot rather than asking a model to invent it for a supposedly faithful image.
Keep exact exhibition wording outside the generated artwork as editable text. Store the reproduction, creative output and final layout under distinct names so they are not accidentally interchanged later.
Acceptance checks
Require readable edges, intact signature, representative brush marks and no unexplained reflection patch. Compare the final file with the physical work and the unedited capture. If the image is for documentation, reject unverified changes; if it is for a creative poster, disclose the transformation. Both can be useful, but they answer different audience needs.