Who views my tweets ? I am a freelance graphic designer using twitter for business. Is it only the people who i have chosen to follow or is it everyone who has a twitter account. Obviously this would make a big difference.
Your tweets only show up on the wall of those who have chosen to follow you, not those you have chosen to follow. If your tweets are open to the public then anyone viewing your profile can have access to it.
If you want your tweets to open to the public you can select this option there in settings. Then the people who visits your profile will be able to view your tweets. Otherwise the people who follows you can view your tweets.