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.
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.