Welcome Valenteana!
Your paintings do have a distinct "look" or "style" which is a good thing for marketing your portfolio. Keep painting and developing your craft.
Recommendations regarding some "technical" issues:
First thing is: - keep in mind that your customers (as well as Fine Art America's customers) expect the very best quality (prints). This starts with us uploading the very
best digital image files possible. The printer techs here do inspect your image files before printing is made.
I see some issues with a couple of your "images" that you uploaded. (not with your art)
...it appears that you have cropped off your signature on a few
...it appears to me (just my opinion) that your color-balance and or brightness might be off a bit. (I'm not referring to the original painting but rather the "image" here)
...it appears that you used a camera rather than a flatbed scanner to produce these image files and I see camera flash on some images
...I see a few small blemishes in one. - Forest Rays - also has large camera flash on upper right corner
... - Forest Rays - also is out of focus. Use a tripod to photograph your originals and use the camera's timer to take the photo so your hand doesn't shake the camera.*
... - Mom's Giraffe - is the back round color intended to be gray or a shade of white? How do your images here compare to the originals in tone and brightness.
Many of these issues can be resolved with a solid foundation of camera and editing software skills.
*When photographing original paintings: Use tripod / very bright light - sunlight is great for reproducing your original's color temperature and it's cheap.
The use of studio lights are good also but cost money and require a new skill set. Photographing original paintings for online sales should be taken
very seriously. It is not that simple. There are several tutorials on this site and others. This is a very important step for your success to selling online.
Camera flash glare / blurry images / cropped signatures / canvas edges showing / crooked or corners of canvas showing / dust specs / spots from dirty camera sensor / blemishes
are all examples of technical issues that will lead to having your image rejected by the printer techs and you may loose a sale if you can not correct it in a timely manner.
FAA will notify you if there is a problem and give you a chance to upload a "better" quality image file.
Once again, I think your art is fine and if you invest some time marketing your portfolio outside of this website you will do just fine.It will take time to get established but if
you upload only the very best image files possible, adding the right tags, key words, descriptions and advertise yourself outside of this website then you will get sales.
Marketing, advertising and promoting takes time and can be frustrating at times, but it is vital for your success. People won't find you here at random, you need to bring
the customer to you. You do that, and you will get sales.
I hope I haven't discouraged you too much and if you consider my notes above and recommendations, then I think you'll be fine.
If you put as much thought into your images here as goes into your original paintings, then you're on your way!
-Ken.