I'd like to ask about the structure of this sentence, I've got an idea of how it should be formed, but I'm not sure and I don't want to reinforce any (more?) bad habits in my thinking, so I would value your assistance.
I would like to construct the following sentence;
"I was waiting for you to call me last night, but when you didn't, I went on my own (or by myself) "
And here's my shot at it;
เมื่อคืนผม(กำลัง?)รอคุณโทรมา แต่เมื่อคุณไม่ได้ทำ (or โทรมา again?) ผมไปคนเดียว (do I need to put this part in the past tense as well?)
Am I close?
It also sounds a little abrupt at the end, so I imagine a suitable particle would be added, depending on who you were talking to
Thanks in advance,
Biff


