My teeth are Translucent/transparent after bleaching. Have I over bleached & what can I do to reduce the transparency? (photo)

The enamel surface of the tooth is somewhat translucent, and it appears in your case more so than in most people.  However, enamel translucency is completely normal.In as much as most bleaching regresses over time, it is likely that you will lose some of the whitening over time and the translucent enamel will be much less obvious.  I cannot predict when or how much time that would take.One of the nicest things about home tray whitening is that it happens slowly over days or weeks, so that if you become dissatisfied with too much whitening, then just stop bleaching and it usually reverts back a little bit.  My suggestion is try not to think about it and don't do anything for at least six months.  By then you might have gotten used to the way your teeth look and they should have darkened somewhat compared to how they look now.If that doesn't work, then you might consider direct composite bonding or porcelain veneers as a last resort.