Why can´t I draw an imported image like I could before with an effect that makes the impression that I'm actually drawing and not painting.

What version (specific version number)  of videoscribe are you using? In version 2.x.x, I think when you import an image you should get this menu:

 Each of the 6 options "draws" differently. Your results also depend on the image you are using.

I don't know if these have changed in version 3.

If you want more specific feedback you could attach your image.

-Mike (videoscribe user)

In version 2.3.7 and 3.0.1 you get 2 drawing options when you import a PNG or JPG image - 'reveal' and 'sketch'. You can preview both options before you add the image to the canvas.

2.3.7:

3.0.1: