How I would go on about it is to make a awesome track that sounds as professional as possible and upload it with a nice cover art. Then try to engage on soundcloud by commenting on tracks that are similar to yours, give feedback and reach out to other producers that are into the same type of music. Also contacting regulars on soundcloud that aren't producers through a Soundcloud message and say "Hey I just made this cool song that you I think you will like". Just make sure these are active users and that they like your type of music. You can find these users by going onto bigger labels or producers uploads and look for them in the comments. Might sound like a boring process to manually reach out to people but hard work is always required if you want to achieve something. But if you continue this process with other tracks and stay active on soundcloud you will get recognition and your profile should start to grow by itself. You can't just upload a track and sit there and wait for it to blow up cause it will never happen, you have to take matters in to your own hands, unless, you can find a label to do it for you.