A few things.
After setting the BPM, you should also set an offset. Now it's in 00 I don't know if that's ok.
Since you already have the beatmap done, you need to "resnap all notes" (In "timing" menu) to make them follow the BPM, right now, the version you upped only has the BPM changed and nothing more. Then, check if the notes sound in the places you meant them to sound.
You need to add some sppinners and sliders to the song, that way is a bit monotonous, try to be creative with it!
Then use some different sounds, like whistles and finishes. They make the song a bit more interesting.
Finnally, when you upload a new version, only upload the .osu and not the whole file again (If you do, use the same name that way there aren't multiple copies of the same song in the database) and attach it to your post.
That's all I have now. Cya!