Here are a few things to keep in mind when shaving a cat:
1. Choose the right tools: Use a professional cat grooming tool or scissors to ensure safety and effectiveness.
2. Preparation: Before shaving, bathe and comb the cat's fur to ensure it is clean and tidy, making it easier to shave. 
3. Choose a suitable time and environment: Select a time when the cat is relatively calm and relaxed to shave, avoiding excessive tension or excitement. Choose a quiet, well-lit place to shave for easier operation and observation.
4. Shaving Technique: Gently shave along the direction of hair growth using a razor or scissors to avoid damaging the skin. Be careful not to shave too tightly to avoid irritating the skin.
5. Pay attention to details: Be especially careful around the eyes, ears, and surrounding fur when shaving to avoid accidental injury. If unsure, leave it to a professional pet groomer.
6. Post-shaving care: After shaving, brush the cat's fur to ensure no hair remains. Observe the cat's skin for any abnormalities, such as redness, swelling, or damage, and treat them promptly.