In my gig i am not getting any kind of sales.
Please point out my mistakes
I am not sure, it looks awesome! Maybe you should clarify, the voiceover art. Will it be your voice or that brilliant english accent in your sample video?
Share your Gig at social media. Also promote your Gig.
Promote your gigs and send all 10 buyer requests daily. Try to find targeted customers on social media
The audio in your sample will probably hurt your chances.