Hey man I started my freelance career when I was around 14 and all I can say is take EVERY opportunity that comes up whether it's a $70 job or less. Building contacts and building your portfolio will all contribute to your business in the future. People I worked for or with over 6 years ago are still my friends today and we quite often help each other out with our websites.

Keep a good attitude, when you work with clients be polite but generally a nice guy. Clients love designers/programmers who can suggest new things, who can offer the point of view of a visitor. Keep a healthy relationship with people you work with.

All I can say is keep experimenting and get yourself out there, don't be intimated by the competitors and what they charge. You have a good start with your website (however, I'd suggest you cut down on the outer glow effects - they look tacky) try new styles and gain some experience.