Those are great, SG! my beginning stuff was way worse than that, I tell you! yes, many studios have a painfully and needlessly slow turnaround time ans ironically, now that I'm a little more experienced, I don't care how long it takes for stuff to come back, but I understand that in other studios, my experience would give me priority firing
for future referance, if you can, use the offcuts of your pieces to create "test tiles" and glaze them with what you plan to use for the main piece, and see if you like the result before glazing the main piece.
i paint all my glaze on, btw.