Underexposure: Avoid underexposing your images, as it's harder to recover details in the shadows than it is to recover blown-out highlights in post-processing.

Focal Length: Be mindful of the focal length you're using, as wide-angle lenses can distort facial features and make subjects appear larger than they are.

Also worth reading: What are some tips for improving my photography skills based on feedback from my 5th real estate shoot? · What does "shoot first, edit later" mean in the context of filmmaking? · What is the flambient technique and how can it improve my photography skills?

Soft Light: Shoot near a window or use a softbox to create soft, flattering light that minimizes harsh shadows and facial defects.

Autofocus: Use continuous autofocus (AI Servo or AF-C) to track moving subjects and ensure sharp focus, especially during portrait sessions.

Model Directions: Give your model clear directions and communicate effectively to avoid confusion and ensure they're comfortable in front of the camera.

Background: Pay attention to the background, as cluttered or distracting elements can take attention away from your subject.

ISO: Keep your ISO as low as possible (preferably 100 or 200) to minimize noise and ensure the best image quality.

Composition: Use the rule of thirds to divide your frame into thirds both horizontally and vertically, placing your subject at one of the four intersecting points.

Over-Reliance on Editing: Avoid relying too heavily on editing software to fix mistakes.

Instead, focus on capturing the best possible image in-camera.

Polarizing Filter: Use a polarizing filter to reduce glare, enhance colors, and increase contrast in your images.

Lack of Preparation: Prepare your equipment, batteries, and memory cards beforehand to avoid last-minute stress and technical issues.

Not Testing Equipment: Always test your equipment before the shoot to ensure it's functioning properly and you're familiar with its features.

Ignoring the Environment: Take note of the environment and use it to your advantage, incorporating relevant props or scenery to enhance your images.

Rushing the Shoot: Take your time during the shoot, and don't rush through poses or setups.

This will help you capture the best possible images.

No Backup Plan: Have a backup plan in case of unexpected weather changes, equipment failures, or other unforeseen circumstances.