Somebody asked me this on Tumblr; I thought I would tell you too!
My username "Wistaraa" combines two words:
1) Wistful: (adj) having or showing a feeling of vague or regretful longing.
2) Sitara: which is a Sanskrit and Hindi word for Star
The username combines my love for celestial bodies and the feeling I want to evoke through my writing.
It is also a wordplay with another Sankrit/Hindi word, "Vistaar" (विस्तार), which literally translates to "Expanse", but can also mean "Limitless".
So how to pronounce my name? For my Sanskrit- or Hindi-speaking people, it is: विस्तारा.
And for the people who don't speak Sanskrit or Hindi, it is pronounced (in phonetic English): vee-stah-ruh
(I added an extra 'a' at the end (just on Wattpad) because 'Wistara' was not available lol!)