How to ask a girl out via Skype?

I have liked this girl and just a couple days back she told me she had strong feelings for me, I told her they I felt the same. The only problem is that she is in Africa and I am here in Canada. Its sad but I can't do anyhing about it. I am willing to wait and try and make this work and I can go see her at least twice a year for about 2 months. But I need to ask her out for the time being just to be safe.

Please help asap.
How to ask a girl out via Skype?
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