Hola me pasa igual nunca borra y lo que hace es dejarlo mal, he probado varias maneras y llegue a la conclusión que estoy aplicando el grafito con mucha presión, probaré espero me funcione 🙂

This can happen for a few reasons, and you’re absolutely right, Erika 😊 Pressure is one of the main ones. The Mono eraser works best when graphite is applied lightly and built up in layers if the pressure is too heavy, the graphite sinks into the paper and the eraser will smudge instead of lifting. Paper also matters: a bit of tooth works much better than very smooth paper. Keep your eraser clean by rubbing it on scrap paper, and use a gentle dabbing or rolling motion instead of rubbing. It also helps to lift highlights earlier rather than waiting until the end. Build tones slowly, stay patient, and don’t worry this is a very common step in learning, and you’re doing well 👍✏️