Food photography is definitely all about trial and error!
One of the main things I've learnt since I took my first foodie photo's was to get my white balance correct. Your shots look very much like my first shots. Very warm but quite orangey, and the food doesn't look too appetising.
It's a good idea to get used to photographing food on a white background.
Here's one of my early photos of food (bad white balance) which I wouldn't want to eat...
And here's one of my latest (correct white balance) which I would! (and did...)
Keeping the background plain at first helps you master the colours and make the food look good enough to eat!