Ignore almost what everyone else has said!

No-one has written any age/getting-design-jobs laws!

You may get rejected and not taken seriously, but then again you might get accepted! Learn to take the rejection and use it positively to build on your sales skills. Each rejection brings you closer to that acceptance!

Too many people concentrate on the negative side of rejection and don't even bother to try because it scares them too much. Failure is a big stepping stone you will have to get over, I suggest getting used to it now, embrace it, use it, learn from it!

Go out and have a go at getting some local clients! ask anyone and everyone, ask your family!

Set yourself a reasonable hourly rate and go out and get some clients!