Review it
To start I'll tell you that this review will be pretty negative. Don't bother about it, it's all about helping you get better.
To start of, the melody is rather dull and doesn't seem to follow any chordprogression. The best way to start a melody is to build around a chord progression. From this track I think you probably haven't learned about them. I believe you should reading up about it.
Second , listen to that rythm. It just goes du-du-du-du. Try using some variation. Keep it from getting boring. try adding a chord. Layering notes. Experiment with velocity.
Third. You really want to add in some percussion. Especially if you want to call your song 'epic'. A good percussion build can make a song much better. Most software doesn't include a lot of drumsamples so I think you should check the internet for some.
You probably didn't use the mastering aswell. experiment with reeverbs, delays and filters. Try creating automation clips.
The lenght is too short. Even for a loop.
Overall this doesn't stand out at all. You need to get some tutoring about music theory. Keep sending in tracks to NG. With some luck you will get more constructive reviews and will learn from it. If they just bomb you without reviewing , contact me and I'll be glad to help.
Greetz Duba
Feel free to return the review.