I'm not really a songwriter or composer, I can't give you improvement tips there.
As a listener though, I liked it, but other than the ongoing beat, it lost the reggae vibe, but since it's only a sample perhaps the reggae influence will be stronger?
Now on to why I am here:
My name is Athul, I am a leader of a gaming brand and we have a Twitch Stream that focuses on electronic reggae, electronic jungle, ragga step, dubstep reggae, african dubstep, tribal dubstep and we came across your video in our search for budding artists who may be interested in allowing us to use your music on our channel. Credit will be always given in stream with marquee giving - Name, Song Title, Album and a playlist will be listed that will show your song and a link to your author page. We may also use it in YouTube videos and credit will be given in a similar manner but in the comments. If this sounds of interest to you, please let me know!