I am writing just the second paragraph.... U can write the address...
The answer:
Dear friend,
I was spending my summer holiday with my grandfather and grandmother as our mother and father decided to spent the holidays with my uncle and aunt. I usually spent my days in the playground. I made a lot of new friends. What about you? Hope you are also fine. In my holidays I learnt to ride a bicycle and even started a small lemonade store. I even learnt to make sweets from my grandmother. Last but not the least I learned to swim in the local swimming pool.