Tips and Tricks:
1. Observe Before Drawing: Before you start drawing, carefully observe the given drawing. Take note of the shapes, lines, and proportions. This will help you in creating the missing half accurately.
2. Symmetry is Key: Since you are only required to draw half of the image, symmetry plays a significant role in completing the drawings. Focus on creating symmetrical shapes and lines.
3. Start with Basic Shapes: Begin each drawing by creating basic shapes and outlines. This will help you establish the overall structure of the drawing.
4. Practice Patience: Some drawings might be tricky and require more precision. Take your time to ensure your lines are straight, curves are smooth, and the overall drawing looks well-formed.
5. Zoom In for Precision: For complex drawings, you can use the zoom-in feature (pinch-to-zoom) to increase precision and accuracy while drawing.

Strategies:
1. Break Down the Drawing: If you encounter a challenging drawing, try breaking it down into smaller sections. Focus on completing one section at a time, ensuring symmetry and proper proportions.
2. Use Hints Wisely: If you're stuck on a specific drawing, you can utilize hints. However, use them sparingly, as the allotted hints are limited. Save them for the trickier levels.
3. Experiment with Colors: While the game primarily features black and white drawings, don't hesitate to experiment with colors. Adding color to your completed half can enhance the overall visual appeal.

Level 1 - Ancient Artifacts:
The first level introduces you to the game's mechanics and familiarizes you with the drawing puzzles. Drawings include iconic ancient artifacts such as masks, pottery, and statues. Focus on symmetry and proportions to complete each drawing accurately.

Level 2 - Nature's Wonders:
In this level, you'll encounter nature-inspired drawings. From animals to landscapes, the challenges become slightly more complex. Remember to observe and create symmetry to achieve the best results.

Level 3 - Buildings Around the World:
Get ready to draw famous landmarks and buildings from around the world. Pay attention to architectural details, shapes, and patterns. Use the zoom-in feature for precision while drawing intricate structures.

Level 4 - Food Fusion:
Challenge your creativity in this level with drawings related to culinary delights. From fruits to mouthwatering dishes, your drawings will make your virtual meal come alive. Experiment with colors to enhance the visual impact.

Level 5 - Cartoon World:
Enter the whimsical world of cartoons and doodles. Here, you'll find characters and objects inspired by your favorite animated shows. Think outside the box and use your imagination to create hilarious and vivid drawings.

Conclusion:
Congratulations! You have successfully completed the Draw Half 2: Drawing Puzzle O walkthrough. By following the gameplay mechanics, tips, tricks, and strategies discussed, you mastered the art of creating stunning drawings with just half the lines. Keep exploring the various levels, challenge your creativity, and enjoy the endless fun of this addictive drawing puzzle game!