With carbon composites you have a few potential failure causes (with the exception of good old fashioned breaking due to higher than designed loads.

1. wrong resin: Using too stiff a reason (ie polyester) will result in the matrix breaking down and delaminating. Can be prevented by always using epoxy.

2. UV damage can cause the resin to break down and wait for it.... delaminate. Can be prevented by painting with a suitable paint, so stop posing and loose the clear carbon.

3. Getting too hot can cause the resin to soften and re-distribute itself in the matrix, so make sure the above paint is white.

4. Too much resin will make it harder and can cause it to crack as per 1. above. So worst case weigh out your resin, best case use infusion or pre-preg.

5. Not enough resin means the fibers wont be held together properly and they'll delaminate when loaded. See above for fix.