Don't feel bad. If my BIL wasn't a carpenter with a lifetime's experience mine would only slope one way, too. He laid out a jig & built the 1st truss. All I had to do was copy it 8 more times, but I managed to screw it up 'cause I didn't know what I was doing & he had to make the jig all over again.
When you're up to full speed again, come on over; I'll probably have another project going.