Any tips for losing weight?

Yes, you heard it right.

I really want to lose weight, and now I have got more reasons for losing weight than keeping it.

1) I want to look great in my graduation dress next year.
2) Actually I wanted to take more self-portraits, and it would be great if I was thinner.
3) My face would not be that.. fat.

Maybe I am just too self-critic, but I started the experiment one week ago.

Actually I do not do much, I just stopped eating sweets, chips, crisps and extra fat.
I also do not eat carbohydrates in the evening, which is a torture for me. Could
anyone tell me what to eat except boiled ham?
And: I eat Fruits and vegetables! They are healthy.

And since I am a photographer, I thought "hey. You take pictures of nature once a
week. That's enough sports." Haha, the weather gets colder, and I am getting ill much easier,
so I prefer staying inside. But that period is over now.
I will start sports, too. A friend of mine is taking me to the gym in half an hour,
and I will workout to improve my stamina and my strengh.
I will totally fail, since my stamina is about minus infinite.

That's all I do. And I already lost a pound in a week.

Do you have any more tips?