I have never entered anything either...that being said, I am sure I would also be "flustered" but, please don't let anyone else's criticisms make you feel bad about your quilting or any other ability. If criticism is constructive, and asked for (as in the case of entering a judging show) then it should be taken as what it is, suggestions and another person's opinion...that is all it is, though!! I just hate to see anyone question themselves over another persons opinion...so, please just chalk it up to that, and keep making the beautiful quilts that you love making!!
Regards,
Kif