Hi Tiffany, I just opened last week so I'm not (yet) an expert but here are some thoughts that could help -
I looked at this listing -
http://www.etsy.com/listing/119408921/reversible-travel-anywhere-baby-highTo me, your tags are good but I don't think you need to worry about capital vs. lowercase of the same word (someone please correct me if I'm wrong!!) so that repetition (I think it was "baby"?) could be the waste of a tag.
At first the travel high chair was confusing to me - it was hard to tell from the thumbnail what it was, and then at first when I saw the full photo I thought it was a toy because of the stuffed guy in there. I know it is explained in the title, your announcement, the description - but most people are moving quickly and relying on the visual. For that reason and from what I've read, I think working on photos is huge, I've been trying to clean my up a bit at a time but know I have a way to go... I'd keep working on those highchair ones for sure, they're a bit dark.
One other thing about your listing - if I were shopping for this I would probably appreciate more size info. How big are the leg openings?
I just looked quickly and those were things that stood out to me, and like I said, I'm still learning myself!! Hope some of that will get this thread rolling for you and that your shop takes off! - From what I've read, it can take some time - and a lot of work! - to get sales, and marketing yourself (outside Etsy) is pretty important - another thing I need to tackle, too!
Best wishes!