Is it wrong to be boyish or easy said, a Tomboy

No it's definitely not wrong. But you have to know when to draw a line in being a tomboy. For example, when you're with your female friends, don't talk about things they don't know about like the things you talk about with your guy friends... stuff like cars, sports and stuff like that. You also have to fix up every now and then. But don't change who you really are because of that. Tons of luck and I hope this helps!