In order to change your gender, simply click on the tab titled "Avater" once there, choose the "base" option and it will have several choices for default bases, the ones with a small "m" by the are for male bases. I hope this helps...any other questions, please don't hesitate to ask.
EDIT: Same thing goes for any avatar changes, you'll find them under that little "Avatar" tab.^^
1.Go to the "Character" tab,
2.When there go to "Town place."
3.Go to "Forge."
4.Click the big tab beneath that says "Repair Item."
5. There'll be 2 drop down boxes that say "Tool," and "Item." Just select your hammer from the first box, and what you want fixed from the second click the repair tab and voila!