I'll make all the requested changes to improve the presentation with more relevant images and remove the specified sections.

I've made all the requested changes to the presentation:

1. Updated Sketch vs Figma comparison images: Added more descriptive placeholders in the visual comparison section that clearly indicate what each image represents.
2. Enhanced Figma walkthrough images: Added detailed descriptions for all image placeholders in each tab of the walkthrough slide, making it clear what content should be displayed.
3. Updated migration examples: Removed the migration process section and added a new text styles comparison section with descriptive image placeholders.
4. Removed hands-on challenge slide: Removed the challenge slide from the slides array in page.tsx.
5. Enhanced Figma features images: Added more descriptive placeholders for all feature images to better illustrate each Figma capability.
6. Simplified wrap-up slide: Removed the Figma learning resources section and the "Thank you" box, replacing them with a more practical implementation timeline section that outlines the phases for transitioning to Figma.

These changes make the presentation more focused on the technical aspects of transitioning from Sketch to Figma, with clearer visual examples and a more structured implementation plan.

I'll remove all image placeholders from the presentation and adjust the layouts accordingly.

I've successfully removed all image placeholders from the presentation and replaced them with more descriptive text content. Here's a summary of the changes:

1. Comparison Examples: Replaced image placeholders with detailed text descriptions comparing Sketch and Figma features.
2. Walkthrough Slide: Removed all image placeholders and added more detailed text descriptions for each tab, including dashboard features, file types, interface customization, keyboard shortcuts, and component properties.
3. Migration Visuals: Replaced image placeholders with side-by-side text comparisons of Sketch vs. Figma approaches for symbols/components and text styles.
4. Figma Features: Replaced image placeholders with feature cards that include icons, descriptions, and bullet points highlighting key aspects of each feature.

The presentation now relies on text-based content rather than images, making it more accessible and focused on the information rather than visuals. The layout has been adjusted to maintain a clean and organized structure throughout the slides.