Nothing says "Tumblr" like a cute girl in a cute dress with a cute dog.
There's no way to lose a significant amount of weight in a day without surgery.
Buy a decent DSLR camera and a tripod and learn how to use them well.
If you do prefer to keep a single hairstyle without changing it, let it change and refine over time.
Their hair can be very short or very long.
Blue and purple hair tumblr