To automatically turn normal selfies into realistic-looking vector files that appear hand-drawn, you can utilize various software and online tools designed for vectorization and illustration. Here's a step-by-step guide on how to achieve this:

1. Select Vectorization Software or Online Tool: Choose vectorization software such as Adobe Illustrator, CorelDRAW, or Inkscape. Alternatively, opt for online tools like VectorMagic or AI cartoonizer online that offer vectorization capabilities.
2. Upload Your Selfie: Import your selfie into the chosen vectorization software or online tool. Ensure that the image is clear, high-resolution, and suitable for vector conversion.
3. Utilize Auto-Tracing or Vectorization Feature: Most vectorization software and online tools offer auto-tracing or vectorization features. This functionality automatically converts raster images into vector paths, which is essential for creating vector files.
4. Adjust Settings for Hand-Drawn Effect: Explore the settings within the vectorization tool to customize the output and achieve a hand-drawn appearance. Look for options to adjust stroke width, smoothness, and other parameters to simulate a hand-drawn effect.
5. Experiment with Filters and Effects: Some vectorization tools provide filters or effects that mimic hand-drawn styles. Experiment with these options to enhance the realism of your vectorized selfie. Look for sketch, pencil, or artistic filters that suit your desired aesthetic.
6. Refine and Edit the Vector Artwork: After vectorization, refine and edit the vector artwork as needed. Fine-tune anchor points, adjust curves, and add additional details to enhance the hand-drawn look. This step allows you to personalize and perfect the vectorized selfie.
7. Save the Vector File: Once satisfied with the result, save the vectorized selfie in a suitable format such as SVG, AI, or EPS. These formats preserve the scalability and editability of the vector artwork for future use.

By following these steps and utilizing vectorization software or online tools, you can automatically transform normal selfies into realistic-looking vector files with a hand-drawn appearance. Experiment with different settings, filters, and effects to achieve the desired artistic effect for your vectorized selfies.