Hello Itay,
Positive Critique:
+Your rings are beautifully made.
+Your photos with your necklace charms against the T-shirt fabric show the charms well and give the buyer an idea of how it can be worn.
Constructive Critique:
-The photos with wood as the background take away from the ring being shown.
-Some photos of the the necklace charms have a grainy background, that takes away from items too.
-As for the photos with rocks as a background/display, Perhaps the items would stand out more if the two rocks used were similar colors.
-A few pictures of your rings being shown would be helpful to buyers browsing deciding what to buy.
Your work is great, you photos with uograded backgrounds can make you even more sales, I think.
Congratulations on all the sales you've got. Keep up the good work. : ).