Steps:

1 - Print the accessory, place the pen and place it on the grids that come in the Ender 3 Nozzle housing (Enter with a little pressure)

1.1 - Adjust the pen so that it is 1 or 2 mm below the level of the nozzle and adjust the bed to the height of the pen tip

2 - Transfer the drawing to vectors in a program such as Inkscape or similar

3 - Transfer this vector to a 3D program like Blender and give it a height of .1 mm which is equivalent to a layer in Cura

4 - Export the model to .STL

5 - Load in Cure the STL (I leave an attached Cure profile configured to draw only for the Ender 3 ) It is important to move the model 4 cm to the right so that now the point of origin will not be the nozzle, it will be the pen tip that is approximately 4 cm to the left of the nozzle

5.1 - The profile that I load in automatic deactivates the extruder's motor so it is not necessary to remove the filament, but it can always be removed to avoid any conflict.

6 - Place a sheet, glass, etc. In the warm bed and send to print (Which you will now draw instead)