I imagine you didnt let the dough rise enough or you punched all the co2 out of it when neading it back down.
this is my recipe / method
INGREDIENTS:
2 cup plain flour
1 cup self rising flour
0.5 Tsp of bread yeast
1 egg
0.5 Tsp salt
0.5 Tsp baking powder
2 Tbsp sugar
1/2 cupl warm water
1/2 cup milk
vegetable oil
METHOD
1. Sieve flours, add yeast, baking powder, salt, sugar and mix in bowl
2. Whisk egg, milk, 1 tsp oil
3. Add warm water to flour mix and hand mix for about 15 seconds
4. Slowly add egg, milk, oil mixture, little at a time. Do this step quickly after adding the water, or the mix will be lumpy.
5. Mix and knead with your hands until the dough is smooth, and no longer sticks to your hands or the bowl. This takes about 5 minutes.
(rub oil all over your hands to stop the dough sticking so much)
6. With your hands, rub oil on the dough ball. Cover dough with a damp towel, and rest for 2 to 3 hours (room temp) it will double in size.
7. After 2-3 hours, punch down the dough and split into 4 balls. Knead and roll the divided dough into 4 balls. Cover again with damp towel and rest for 30 minutes until you are ready to cook.
8. Take a ball of dough and flatten it and pull it (or do the hand to hand throw thing) until you have a 1-3mm thick bread. Add garlic, mustard seeds or anything else you like at this point to the dough.
9. Fry the dough on a thick bottomed frying pan or tawa for 1-2 minutes then grill and 'toast' the bubbles
repeat