Step 1: What's an avatar?
Sometimes users can choose from available avatars or upload one of their own design. It's good to know that avatars represents you on the internet, so be careful what image you choose.
Step 2: Hand draw image
Use a graphics editing program to make the background transparent or white. I use Adobe Photoshop to do this. Here's how:
1. Open your scanned picture
2. Use pen tool or Magnetic Lasso tool and outline your drawing. If you use Magnetic lasson tool when you finish with outlining go to Select - > Inverse
3. Press the delete button on your keyboard for transparent background or color with a color you like.
4. Save your picture with .PNG extension if the background is transparent.
5. Your image is ready to be uploaded.
Another idea is to invert colors. When you open the scanned picture go to Image - > Adjustments - > Invert