That depends what you consider a 'good' or 'bad' approach. For me, the actual act of approaching girls isn't a problem. I have the confidence to approach them. As we know, however, confidence is a meme, and I haven't got anywhere in terms of tangible results. Now, some time ago, I would have considered this down to my approaches not being up to scratch, and I would have gone away and analysed my approaches and reflected on what I did wrong and what I could improve. Now, however, I know in reality that my chances of success when I approach any girl are pre-determined by whether or not she finds me physically attractive and is available/looking - and in the majority of cases, both of these criteria aren't met. Any girl I approach will know within seconds whether or not she finds me physically attractive enough to consider dating based on my face alone, and when she doesn't, it doesn't matter how confident I am or what I say, because that's not going to change my face.
So, you could say I'm 'good' when it comes to actually pushing myself to approach them, and 'bad' when it comes to getting tangible results, but the reality is that it's not a skill set and to classify oneself as being 'good' or 'bad' at it is wide of the mark.