eBay

How can I change my username 

I was wondering if I could change my username and if so how? I used my email address when I entered my username and I would like to use something better and easier to remember-not so long!

I just got on EBay (selling) about 2 weeks ago. I've sold 15 items. The total amount from those sales is still in my EBay account. I've made purchases but, have a credit card for those. My EBay account is still totaling those 15 items and my PayPal b...