I have done certification courses on how to make attractive and persuasive presentations on Coursea. The certificates can be accessed here : https://www.dropbox.com/s/rc2xjb5fuzubtx6/Powerpoint%20presentation.pdf?dl=0. Moreover, I have also honed my presentation making skills through the " Presentation Skills " courses which I have undertaken at my premier B-school. I can be relied on to provide high-quality content which is persuasive and deeply researched as well as attractively and professionally designed. I invite you to go through one such sample which has been uploaded in my portfolio and can be accessed from below.