Yes, I'm familiar with the song, btw.
For your first map, this is actually pretty good. Close if not perfectly timed, combos aren't too high, and it flowed pretty well (for the most part). A few issues though.
-Looks like you used distance snap in some places, but not in others. It's important to have correct distances throughout the entire song, otherwise people who never heard the song before will find it confusing and it'll be frustrating to play. You need to go back through the song with distance snap on and double check your spacings. (move each note around and it'll snap to the correct distance).
-4:30 is a bit long for a beatmap. You'll need to find a good place to end so the length can be shortened.
-You need to add in hitsounds (the whistle, finish, and clap you see on the right side). It'll add spice to it.
-Go to song setup > audio in hard and select normal hitsound.
Very impressed with your first attempt. Hope my advice helps.