Please, help my butterfly stroke!!!

Nice rhythm. Breathing seems ok (although little late timing-wise). 33 something for your age group is very good. First thing that strikes me is that you seem to have tried to exit little further than some of your competitors (by extending the underwater dolphin kick) but some still managed to end up in front of you at first 12.5 Make sure by testing all this with your coach that your underwater dolphin kick is actually faster than your swim pace over 50m. If it's not the case then you should exit earlier and start swimming right away. I (myself) am not as fast underwater (at this point) than I am when swimming. I can lower the 25m under 15s swimming, but not underwater kicking. So I will make no attempt to mimic Micheal Phelps. Soon after the dive you see me exiting to get to my race pace as early as possible. The second thing that strikes me is that your first kick doesn't seem very strong. Like Speedo smartly pointed out, upon your arm entry, you'd benefit from a more powerful first kick. Speaking of arm entry, you seem to be generating little more drag than you should. I know, during a 50m, it's impossible not to splash or create drag but in your case, I donno, this phase seem to be your weakest. Poor first kick along with no glide forward and a lot of drag.... I am unsure as to which of these 3 problems is giving me the impression that you're loose speed there, probably a combination of the 3. Note that your training slower pace stroke might not reveal these weaknesses as well as your 50m race pace. If you want to correct these aspects, practice them slow but don't forget to practice and test them at full speed too (we often make the mistake of not swimming at full race pace often enough)

Nice rhythm. Breathing seems ok (although little late timing-wise). 33 something for your age group is very good. First thing that strikes me is that you seem to have tried to exit little further than some of your competitors (by extending the underwater dolphin kick) but some still managed to end up in front of you at first 12.5 Make sure by testing all this with your coach that your underwater dolphin kick is actually faster than your swim pace over 50m. If it's not the case then you should exit earlier and start swimming right away. I (myself) am not as fast underwater (at this point) than I am when swimming. I can lower the 25m under 15s swimming, but not underwater kicking. So I will make no attempt to mimic Micheal Phelps. Soon after the dive you see me exiting to get to my race pace as early as possible. The second thing that strikes me is that your first kick doesn't seem very strong. Like Speedo smartly pointed out, upon your arm entry, you'd benefit from a more powerful first kick. Speaking of arm entry, you seem to be generating little more drag than you should. I know, during a 50m, it's impossible not to splash or create drag but in your case, I donno, this phase seem to be your weakest. Poor first kick along with no glide forward and a lot of drag.... I am unsure as to which of these 3 problems is giving me the impression that you're loose speed there, probably a combination of the 3. Note that your training slower pace stroke might not reveal these weaknesses as well as your 50m race pace. If you want to correct these aspects, practice them slow but don't forget to practice and test them at full speed too (we often make the mistake of not swimming at full race pace often enough)