Name two common mistakes that a computer user makes when composing a presentation and explain each is a problem.

1. Overloading the presentation with too much text: One common mistake that computer users make when composing a presentation is including excessive amounts of text on each slide. This can be problematic because it overwhelms the audience and makes it difficult for them to focus on the key points of the presentation. It also hinders the presenter's ability to engage with the audience since they may end up reading directly from the slides instead of actively engaging with the audience and conveying the information in a more dynamic and engaging manner.

2. Misusing visual elements and graphics: Another mistake is misusing visual elements and graphics within the presentation. While incorporating visual aids can enhance the effectiveness and comprehension of the presentation, using them inappropriately can have the opposite effect. For instance, using too many animations or transitions may distract the audience from the content and make the presentation appear unprofessional. Additionally, using low-quality or irrelevant images can confuse or mislead the audience, undermining the overall message of the presentation. It is important to carefully select and place visual elements in a way that reinforces the key points and supports the main ideas of the presentation.