1st

Unexpected, but I really like it. It might just be a higher level mistake, but I still like it.

This seems really, really bad for white. A solid wall facing a closed corner, with not that much territory in return. This can't be joseki ...

Seems a very tight place to invade. R11, then R7... white has no base, and must flee. Oh, that's exactly what happened, too.

H9 puts lots of pressure on the white blob, and builds a wall facing white's biggest territory.
+100

This is kinda slow. skydyr's G5 suggestion is lots better.

Aw, now it escapes. F10 was my first thought, too.

Fairly sure L3 works, but on the other hand, there's no real need for going in at full throttle now.

This would have been brilliant from white.
+200

White goes into full on goof mode. This move actually works, since black MUST respond to keep the ko fight alive, but now white can capture.

White should have analyzed what was bigger.

I would have played G19, here. White makes a mistake, though, and it's actually harmless to try if white responds at G17. Sometimes it really pays off to be a bit cheeky.
2nd

or

must be a mistake? At least somewhere before

white does a silly thing, given the outcome.

Well, that's ... unexpected. You have 3 corners, shut off. Against 1d, no less. I would be very happy with this.

WAY too small. Seriously, look at the bottom left corner. GO FOR A FULL QUARTET!

White secures that last corner. Probably would have lost much sooner without this, but still in trouble.

This isn't 100% wrong, but if you want to make white super nervous, invade the left side. I would probably go for C7. Not sure if this super nervous making move would actually be best, but I like my opponents flustered, especially when they are behind.

I do not understand, but hey, free points!

Would you be able to run away with a stone at H14?
You seem to cut a little bit more in general, which makes things more exciting.
That second game really shows how much it pays to capitalize on mistakes. The opening and white's loss after

provided you with enough points to survive your losses at other times.