This is the #1 mistake that makes most slideshows look amateur

I’ve sat through more than my fair share of presentations, via Microsoft PowerPoint or Google Slides, and nothing derails my focus faster than inconsistent spacing in a slide deck. I notice text boxes that are so tight beside ones with generous spacing on the same slide. Likewise, I’ve seen bulleted lists with unreasonable gaps between points, no space after paragraphs, or unreasonable distances between the bullet and the text. Instead of following the message, I just find myself fixating on the tight line spacing, uneven margins, and inconsistent gaps between the elements.