Homebrew PCBs

Have the etched board in my hand and its almost a beauty. One small 
void in a trace thats about 0.15 wide and a bridge between a pad and 
a trace. I think the bridge is because I took the board out a few 
seconds too soon. No green apparent in it. I'll soak it a bit longer 
after work.The rest looks perfect though, quite a shock to me seeing 
as its only the second board!

Does the etching solution harm the resist at all? Wondering how 
critical it is to get the board out of the etch at exactly the right 
time.