30 Min. vs Hourly vs Daily – during the trading day

Hi Pat - On Friday, I practiced some of what I have learned from you which felt great and, generally, I think I was successful. I do have a question though.  I bought FCEL at 13.75 on Jan 7. All good.  On Friday it started to drop a little. I checked the hourly and the 30 min.  The 30 min showed a drop below the 8 on avg. vol., I sold some.  Then it fell below the 8 and 21 EMAs on strong volume (on the 30 min.) so I sold some, not all. In the end I sold it 3-4 times = 80% of my position.  Now - the question - When I look at the daily - FCEL is golden.  Strong green candle with a close far above the previous day's high. Hindsight is 20/20 but I feel like I sold in error.  Would you agree?  Why/why not?  Thanks!!