From what I have seen, no one's handwriting looks very girly unless they draw huge rounded parts of the letters and make the straight parts as tiny as possible, and then round the sides on letters like "L" and "T". If a letter is in correct proportion and doesn't have little loops coming off the bottom of it, then it really doesn't look girly at all to me. For example have you seen people who will write a lower case "d" and they make the bottom circle take up almost the whole letter, and just a teeny line comes over top? That's kind of girly, but draw the straight part longer and it stops looking girly. If it would be at all possible, just try not to draw tiny little tops on your "b, d, h" and not to make the bottom too small on letter "p".
As for my own handwriting, yes I used to draw pretty big and round because it took up more room on a paper and I used to have teachers who would say "Write ten pages and don't double space" so I made my letters wider to compensate. Now I have gone to making them skinny so they look normal.