Итак, порядок такой:
общее описание того, что вы видите (в данном случае, пляж в курортном городке)
детали (аттракционы, много людей, отличная погода)
ваше отношение к теме ( хотели бы вы оказаться сейчас на пляже? — ответ очевиден!)
There are no clouds in the sky and it looks light blue. As for the sea, it is a bit rough, I can see the waves, so the light wind is probably blowing.
In the foreground just a bit to the right there is a big merry-go-round. I can guess that a lot of children are riding horses there. They may be laughing, shouting, in other words, they are having fun.
The beach is very crowded. The people are lying on the sand and swimming in the sea.
Не забудьте о заднем фоне: In the background I can make out the outline of a white pier (пирс) which stands out against the blue sky.
Заключение: As for me, I have enjoyed a lot describing this cheerful picture. This sunny beach makes me feel optimistic because in a few weeks I hope I will be enjoying swimming in the sea, too.
in the sky — на небе
in the rain — под дождем (как бы внутри дождя)
in the sun — под солнцем (в солнечном свете)
Также, если вы говорите о том, что изображено НА картине или фотографии, надо употреблять предлог IN:
in the picture
in the photo
(1) I took it a month ago when I was going on excursion with my classmates. I remember that day very well.
(2) In this photo you can see our bus driver. As you see, he looks very friendly. We have made friends with him.
(3) We were going to the State Darwin Museum and on the way he told us a lot of facts about wild life. By the way, he is from the northern part of Russia.
(5) The job of a driver seems to me rather boring now but I would like to show the photo to you as he is very well-read and interesting person. Besides, I believe he likes his job. You know, there is a saying «Choose a job you love and you will never have to work a day in your life». (в заключение, вы приводите известное изречение китайского философа Конфуция).