To achieve a hand-sketched graphic style for views, use the Sketchy Lines feature.

You can apply sketchy lines to all types of views, including plans, elevations, sections, walkthroughs, 3D orthographic views, and perspective views.
You can define sketchy line settings for the current view. You can also define these settings as part of a view template, and apply that template to other views.
Sketchy lines...
- apply to model elements, detail components, and fill patterns in a view.
- do not apply to annotation elements, such as dimensions, grid lines, levels, text, section markers, elevation tags, and room tags.
- for the element being edited are not visible when you are in a sketch mode (such as when creating floors or roofs), but you can see them when you exit the sketch mode.
To improve the appearance of sketchy lines in a view, use the Smooth lines with anti-aliasing option.
After applying sketchy lines to a view, you can do the following:
- Export the view to an image file.
- Print the view (raster processing only).
- Add the view to a sheet.