Hi Patti! Well I had to come and have a look at your lemon trio, because I recently did a lemon trio of my own (<<<<) using oil pastels, and it has been my trademark temporarily. You've done nicely with this first wc painting; good drawing and treatment of colors. Right now it is fine as a study, but if you wish to take it further and help it become "Art", my feeling is that either it needs to make more sense, or go the opposite and NOT make sense.
If you choose leave it, (realistic-style) the painting as-is, cropping into a square format closer around the subject would give those shadows more surface-sense (ie: what are the shadows falling on right now?)
It could also go further (if you wish to) by adding color in the background, even if it's barely noticable..like a texture or something.
Here's one interesting watercolor trick that creates some texture in a background - don't know if you've ever tried it playing around.. It's a fun one to put in your pocket for any of your next wc paintings too!
This is usually used for skies and you'll recognize it when you see it: paint a fairly heavy layer of color down, then sprinkle some salt on it. Let that dry totally before wiping the salt away, and little white spark-designs are created where that salt absorbs the water-color.
Play with the technique elsewhere first tho, so you gain some confidence before trying it on your very first special piece!

<<< The square format helps us understand the shadows and surface. Great that you went beyond and tried a new material...courageous! Keep us posted!