Some comments.
In playing chart patterns, traders runs the risk of the pattern failing/not happening....ie failed chart patterns.
Many times, traders trade a failed chart pattern seeing only what they want to see.
To protect one self, it's always better to buy correctly, this helps the trader avoid failed patterns.
For CCK, a few reasons I would be weary...
1. Base issue.
Preferred bases are 'U' and not 'V' shape.
The Base represents the period where the stock consolidates and the preference is always to witness the volume drying out during this period. This meant that the weeding out of the weak shareholders is successful.
In CCK cases... we saw the periodic high volume spikes during the Base period. This is a CONCERN.
2. Same with the forming of the handle.
We want to see volume drying out. This has not been the case of CCK.
The handle pullback is also rather sharp. Preference of course is mild pullback.
And when during the forming of the right side of the chart, ie at the peak of the run up, I see declining volume. That again is not ideal.
With these issues, I would be worried if I run the risk of trading into a failed chart pattern.
3. Buying in - ie where to buy.
Biggest mistake I have always witness is that people like to BUY IN early.
They think they see a pattern, they rush to buy in way before the pattern is fully developed.
Buy early ma... cheaper ma... but when the pattern do not materialize , they get stuck....
One needs to be patient when trading chart pattern.
What looks like, might not turn be in weeks to come.
Hence, buying in is just as important.
One needs to buy correctly as buying correctly helps eliminates a lot of future problems/headaches and heartaches.
Here's IBD diagram of Cup and Handle...

Note the location of the buying in range.
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Also...
During bullish market conditions... MOST stocks will fly.
Good stocks, bad stocks.... all also can....
Even not so perfect/ideal looking chart patterns...
when market turns/consolidates/turns bearish....
ah....
this is where and when every thing becomes crucial...
the good stocks with great future potentials.. they remain strong... some even go higher...
but the poor stocks.... they tend to fail badly.....
sorry for being too long wind.