To properly mix mortar for bricklaying, follow these general steps:

1. **Gather materials**: You will need Portland cement, hydrated lime, sand, and water. The proportions of these materials will depend on the type of mortar you are mixing (e.g., Type N, Type S) and the specific requirements of your project.

2. **Calculate proportions**: Determine the ratio of cement, lime, and sand based on the type of mortar specified for your project. Common ratios include 1:1:6 for Type N mortar and 1:1:4 for Type S mortar. These ratios represent parts by volume, not weight.

3. **Measure ingredients**: Use a shovel or bucket to measure out the appropriate quantities of cement, lime, and sand according to your chosen ratio. Transfer the materials to a clean mixing container, such as a wheelbarrow or mortar box.

4. **Mix dry ingredients**: Thoroughly mix the dry ingredients (cement, lime, and sand) together using a shovel or hoe. Ensure that the materials are evenly distributed and free of clumps or pockets of unmixed powder.

5. **Add water**: Gradually add water to the dry mix while stirring continuously. The amount of water needed will vary depending on factors such as humidity, temperature, and the moisture content of the sand. Aim for a workable consistency that holds its shape but is not overly wet or runny.

6. **Mix thoroughly**: Continue mixing the mortar until it reaches a uniform consistency and all ingredients are fully blended. Scrape down the sides of the mixing container periodically to ensure that all dry materials are incorporated into the mix.

7. **Test consistency**: To check the consistency of the mortar, use a trowel to scoop up a small amount and flip it upside down. The mortar should stick to the trowel without sagging or dripping excessively. Adjust the water content as needed to achieve the desired workability.

8. **Let the mortar rest**: Allow the mixed mortar to rest for a few minutes before use. This allows the ingredients to fully hydrate and the mix to reach optimal consistency.

9. **Mix small batches**: Mix only as much mortar as you can use within a reasonable amount of time, typically 1-2 hours. Mortar can begin to stiffen and set within this timeframe, making it difficult to work with.

By following these steps and paying attention to the proportions, mixing technique, and consistency of the mortar, you can ensure that you achieve a high-quality mortar mix for your bricklaying project. Adjustments may be necessary based on specific project requirements and environmental conditions.