Hi Anna,
From what I can see the main stem (trunk) has a nice shape. I would put it in a bit larger pot for a couple of years so it can develop further. When pruning, think triangle, this will help you get a good basic shape. Next Spring remove the larger leaves. Everytime you do this through the summer the leaves will come back smaller. This doesn't apply to flowers. At the moment the flowers look a bit big, but as your tree develops, they will look more in proportion.

As to which fuchsia you have, at a guess I would say it is Lena - Kath:)

Hi Kath!
Thank you very much.I'll follow your instraction.
Anna:>)