MINUS points:  Colorful fonts, different fonts in each slide, lots of animations, reading the slide material (A to Z) facing the screen, lots of Bullets on the same slide, lots of paragraphs/sentences rather than figures/tables, without plan of the presentation, nervousness, etc.

PLUS:

For 30 mins. presentation; around 30 slides

1. Title ( always start with greeting the audience; then even if shows ur ppt TITLE on screen, read it yourself;   If any author/co-author of your paper available during ppt time, introduce him too; if only you are there, u may mention your supervisor's name)

2. Outline (this is must that tells everyone the contents of your ppt as how u ve structured it)

3.  Introduction (background comprising the  main objective) also mention CONTRIBUTION of your study or advantage with respect to available papers/literatures: around 6 mins

4. Methodology (a short literature review can be done here, but focussing on your own): spend a bit time here

5. Result Analysis and Discussion (here, u gonna spend at least 45% time) ===> use equations, graphics, tables while presenting results, rather than sentences.... it will be easier for you too..... present if any sensitivity analysis done.... compare the results with other technique ...

6. Conclusions (with future work)

7. Q and A.

Few tips:

1) don't present the slide in which you are not much confident

2) focus on graphics, tabular results

3) Use simple font color; better black on white back ground (if white any font color or figures would be easily viewable)

4) the font size shud not be too small ; in other words, the fonts should be readable by the audiences

5) no animation PLS - until and unless it is required (all debutant presenters are fond of animations)

6) Never read the slides rather explain

7) u shud know in detail about the content of each slide; with a glimpse of each slide, u explain facing the audience as if u r teaching them

8) if u r not sure of answering their questions; just say "thx for the good question, i will note it down and try to implement it in my future work" (never ever give wrong answer)

Apart from that, u might be knowing the expected questions from the audiences.

The above can be useful in an academic presentation.

Good luck.