Why would you even think you have a problem, to assume that what you see would be anything wrong instead of the usual hop and yeast gunk that usually floats to the top of the beer? The surface of our beer is rarely free of stuff. Yeast rafts float to the top all the time, even in secondary, buoyed up by rising co2, and sometimes carrying little bits of hopscum (GREEN COLORED

with it.
Our beer is hardier than most new brewers think it is, it is usually uglier and stinkier than most noobs think it should be, even when it is perfectly fine.
Don't always assume something is wrong just because something looks the way it does, or even smells or tastes different in the fermenter when it is young.
Read the stories in this thread, and you'll see how you really have no reason to assume everything strange you see is bad. It takes a lot to ruin your beer.
What are some of the mistakes you made...where your beer still turned out great!