Swell/Delay Trouble in FL Studio

[AlligatorMonster]

Hello everyone! I'm a relatively producer trying to achieve the swell sound that producers like flume use. I could not find any video or article on it :/.

Here are some examples of what I mean:

https://soundcloud.com/flume/disclosure-you-me-flume-remix

https://soundcloud.com/future/troye-sivan-happy-little-pill-casper-zazz-remix

(cant post hyperlinks sorry, not enough posts)

Thanks in advance!

 

[KonKossKang]

Audio signal processing:Audio signal processing - Wikipedia, the free encyclopedia
Sound Design:Sound design - Wikipedia, the free encyclopedia

Researching tutorials on youtube, learning about vsts and such like garritan or plugins in general.
Basically lots of research and practice.

Automation tutorial by a fella called Seamless as an example.