請會英語的友幫忙翻譯如下句子,中譯英.謝謝!

題目：

請會英語的友幫忙翻譯如下句子,中譯英.謝謝!
上個星期天,你用你的平板電腦我們視頻聊天時,你的頭像看起來是橫躺著的,應該再轉90度,要重新設定你的射像頭.你在你的視頻里看一下你自己的頭像.
可是你用手機和我視頻時,你的頭像是直立的.

解答：

Last sunday when you were having vedio call with me using your tablet PC,your vedio image looked thwartwise,and it should be 90° reversed to the right position,so your camera needed to be reset.You'd better have a look at your image in your own vedio.
But,when you chat with me through your mobile phone,your image is upright.