Are my photos any good?

I'm a beginner photographer (I'm a teenager so I do not have much experience-only about a year or so.) I own a Nikon D5000. I have never taken any classes but I would like to sometime. Everything I have learned is from looking up information on the internet about aperture, iso, shutter speed, etc. So I'm basically self-taught. I would love to get some general feedback of my photography. Be as harsh a you'd like, I want to improve! What am i doing right? What am I doing wrong? Am I good enough to have a business someday?
Thank you!

Here is the link to my Flickr:

Added (1). I don't mean start a business now. I mean, do I have the potential to possibly one day have a successful business.

There OK notnto special

you won't hold a business with these, try buying a 500, 000 dollar camera to be business type

Yes, you have some great potential. And if you wanted, you could make some money off of them now on Stock Photo. They're great stock photos.

Wauw, that's 12 new pics since you last asked. You're not doing anything with the comments you got last time so I'm not going to repeat those.

The orchids are not bad.

Not really.
The runner would be if you had at least got something on the runner (i.e. The face)

The rest are pretty boring snaps.