Conclusion

In conclusion, I would argue that it is quite hard to get a screenwriting role in the industry as it is a very competitive market that will require you to make changes and acknowledge the integrity of your work so that you can redraft it, make changes and produce complete scripts (remember; write more than one script that is to a high quality and standard as backup to ensure you are seen by commissioners and agents, as they may want to see more of your work to see the standard of writing you can produce) that others will want to view.

I would suggest writing as many scripts as possible. Proof read them, send them to family, friends, peers and colleagues if you are in a college or university to receive an academic response, so that you can understand the audience you are aiming to write for and to understand that changes may need to be made to ensure your script has the strength to be seen by the commissioners and agents.
Understanding your market is a very important point. Create scripts that you know will be well received. Look for a gap in the television market today that you feel you could fill with your script.

In that case, I would create scripts, make them strong and then make the film for your script. Even if it's a short; the experience of writing a script and then producing it to be shown visually is a educational tool. By viewing your ideas in action, you can adapt your script in case something doesn't translate well onto the screen.
You may be putting too much descriptive language in and less action. These lessons can be learnt by trial and error, reading up on successful scriptwriters and gaining their advice to put into practise for your own.

Through reading blogs, creating films and seeking advice from successful scriptwriters, you may be able to understand the markets you are trying to break into.