Barbecue

My family and I went to the barbecue today.
Building the fire quickly is difficult. If one can do that, he must be so cool. It took me about ten minutes to build the fire as luck favoured. So I'm a cool father. Then we ate char-grilled chicken and vegetable curry. It was so delicious.

"Thank you so mach. I have done short time,but It was not my technique and skill. It just happened. I'm lucky.I wanted to write such note.

For the above you must say " I made it up in a short while for luck favoured me. It was not because of my skills . (skills and tecchinique are some what similar in their meaning . So repetition is not necessary.

Barbecue

My family and I went out for a barbecue today.
Building the fire quickly was difficult. If we'd done that, we would have been so cool. It tooks me about ten minutes to build the fire as good luck (dont understand this part), so I'm a cool father. Then we ate char-grilled chicken and vegitables. It was so delicious.

Barbecue

My family and I went out for a barbecue today.
Building the fire quickly is was difficult. If we can do that, we are so cool (do you mean カコイイ、暖かい or 寒さ？Not sure what you mean）. It tooks me about ten minutes to build the fire as good luck, so I'm cool, father (place a comma there, assuming you're addressing your father, I'm still not too sure about what you mean). Then After that, we ate char-grilled chicken and vegitable vegetables. It was so delicious.

This is all I could make out of it, I asked you some questions about what you meant, so maybe if you answer them and I understand, then I might be able to correct those sentences.