You've already gotten great advice
As far as your photos go, remember that flash is the evil enemy. In my personal opinion, while the black offers nice contrast for many of your items, it seems a little "blah" / depressing and many of your items are cute and fun. Definitely fill up those slots, take close ups, show the back, sides, stage it a little differently, etc.
If I was your customer I would want to know more about the towel that the embroidery is on. Cotton? Soft? Hand wash? Machine wash? How big is it? Etc.
You need to promote the heck out of yourself. It takes time and a lot of work, but you get "lost in the crowd" if you don't. And keep making listings but be sure to spread out the postings and not put them all up at once.
Good luck!