According to Reep (2006), the principles of design are qualities significant to any visual presentation in spite of of subject or audience. The common principles most designers believe are balance, proportion, sequence, and consistency.


Proportion
Proportion refers to the size and position of text, graphic supports, and arrangement elements on the slide. Both slides has the same amount of space for headings, an experienced designers would rarely use an equal amount of space as it would cramped the long headings and making the short headings loose.
Sequence
Sequence refers to the arrangement of design features so that readers see them in the best order for their use of the document. Both slides has reflected the effective design as readers would scan these slides from top left and bottom right, follow by reading the important point to important point. However, this slides might be unsuitable for the country which read from right to left.
Consistency
Consistency refers to presenting similar features in a similar style. Some important elements are margins, typeface, and indentations. Both slides have the same headings style, margins, and uniform indentations. But the contents size fonts is different from the first slides, consistency should be maintain to helps readers in emphasizing similar types of information and their similar importance.
Reference:
Reep, Diana C. 2006, ‘ Principles of Document Design,’ in Technical Writing, 6th ed., Pearson Education Inc., New York, p173-190