Hi everybody, I just wanted to share a tip with all you authors, especially you guys whose mother tongue isn’t English.
Unfortunately, it’s not fun to be rejected because of an inadequate description, and the truth is, a good description can help a track sell more!
So here’s a very simple and effective two-step way to do it, to save you (and us!) time and frustration..
1. Forget your description. Start with your TAGS .
For example, let’s say you have a happy track. So you think for a minute and you come up with these mood tags. If you’re stuck you can always find help with words at http://www.thesaurus.com
Mood : Happy, joyful, cheerful, upbeat, uplifting, positive, lucky, content, elated, warm, merry, soothing, inspiration etc…
Instruments : Piano, strings, pads. (As a general rule, it’s a good idea to state only the principal instruments in your track; not many people will search for “hi-hat” for example. Use more moods. This is my opinion
)
2. Now that you have tags, assemble your phrases!
With what you’ve got above, you can quickly and more easily write something like this, using some of the tags:
This is a happy and uplifting piece, full of joyful moments and positive inspiration. An upbeat piano plays the melody, with warm strings and soft soothing pads in the background.
See? You don’t have to use ALL your tags, just some.. That’s just a simple example for starters, of course you can write more if you want!
Ultimately there are many ways to approach description. You could use situational words, like places and seasons too, e.g. The dark desolate city in the cold lonely winter.. The key here, is keeping in mind that using tags as adjectives and adverbs in short phrases is really an easy and effective way to write good core descriptions that characterize and define your music, which can help it connect with a buyer, and also not get rejected for poor description.
Thanks guys, hope that helps some. 

It can be tough to imagine what keywords someone might use to find your track with. Thanks for the pointers Adrien.