Makeup artists can use various techniques to enhance or alter facial proportions, creating a balanced and harmonious appearance that accentuates the client's natural features. Here are some common makeup techniques used to modify facial proportions:

1. **Contouring and Highlighting**:
- Contouring involves using darker shades of makeup to create shadows and define features, such as sculpting the cheekbones, jawline, and nose.
- Highlighting involves using lighter shades of makeup to accentuate high points of the face, such as the cheekbones, brow bones, and bridge of the nose.
- By strategically contouring and highlighting different areas of the face, makeup artists can create the illusion of more defined facial contours, balance proportions, and enhance facial symmetry.

2. **Nose Contouring**:
- Nose contouring involves using contouring products to reshape the appearance of the nose, making it appear slimmer, straighter, or more defined.
- Makeup artists can use contouring powder or cream to shade the sides of the nose to make it appear narrower, while highlighting the bridge of the nose can create the illusion of height and definition.

3. **Brow Shaping**:
- Brow shaping involves defining and sculpting the eyebrows to frame the face and create balance.
- Makeup artists can use brow pencils, powders, or gels to fill in sparse areas, create a more defined arch, or elongate the tail of the eyebrows, helping to lift and open up the eyes and create a more symmetrical appearance.

4. **Eye Makeup Techniques**:
- Eye makeup techniques, such as eyeshadow placement, eyeliner application, and false eyelash placement, can help create the illusion of larger, more defined eyes.
- Makeup artists can use light eyeshadows to brighten the inner corners of the eyes and dark eyeshadows to add depth and dimension to the outer corners, creating the appearance of larger, more almond-shaped eyes.

5. **Lip Shaping**:
- Lip shaping involves using lip liner, lipstick, and lip gloss to enhance the shape and volume of the lips.
- Makeup artists can overline or underline the lips slightly to create the illusion of fuller lips, while strategically placing highlighter or gloss on the cupid's bow can make the lips appear more defined and voluminous.

6. **Face Framing**:
- Face framing techniques, such as adding dimension to the hairline or jawline, can help create the illusion of a more balanced and proportionate face.
- Makeup artists can use bronzer or contouring products to shade the hairline and jawline, creating the appearance of a more sculpted and defined face shape.

By utilizing these makeup techniques, makeup artists can effectively enhance or alter facial proportions, creating a more balanced and harmonious appearance that complements the client's natural features and enhances their overall beauty.