I'm going to be just a little nitpicky (because that's how I learned and otherwise I wouldn't know what to say about any of this).

The "Problem analysis" slide (image 5), the middle arrow has parts of the thick base line peeking out from the sides of the arrow. All of the arrows are also above the border line and some extend below the border just so.

"Concept" slide (image 7), in the shape diagrams, lines either don't connect, extend past their bounding area, and are not consistently angled.

Across many of the slides, there are spaces missing after punctuations and text blocks not properly left or right aligned so one line will look a little skewed compared to the rest of the block.

Finally, the images that you've uploaded themselves seem to be lower resolution jpegs and the artifacting is bad around the text.

I know a ton of time was put in to this but the tiny details (and they are tiny) will stick out more in these scenarios.