This is definitely an improvement from before so good job there! A couple things I notice:
I am all for using sound samples (Trust me I use them too) but I kinda have the feeling that they are overused a tad bit in this. They sound nice but they get kinda dull after awhile.
There is definitely signs that your trying to vary the melody so its not repetitive (using old retro songs can be tough cause some of them are only 1:30 long) Keep finding new and interesting ways to mess with the melody, bass line, etc.
What program/ plug-ins are you using? It sounds like the basic plug-ins you get on FL Studios (Which is not a bad thing). It might be helpful for you to find new plug-ins to use or experiment more with the plug-ins you have already. It can give some extra flare and shine to your music!
I hope this helps