Liz, you need to have much larger photos to give detail.
Almost all glass identification goes better if there is a clear shot of the base. The best way to take the base photo is form a shallow angle to the side. This removes much of the distraction from refraction by the glass itself and if there is a signature it shows up as dark against the lighter reflection of the smoother glass. For vases and bowls it may be useful to get a closeup of the upper rim - again a little to the side to remove the effects od refraction and reflection in the object itself.
As for sizing and posting I urge you to read the useful guide contained in the GMB on how to best do that. Hope this helps.
Ross