Life In 19x19

I'm uploading another game I played. I have some specific questions I'd like to ask. Other comments are welcome but I'm mostly hoping to get my questions answered

Questions
I give up my stone in the right upper corner for now, I might use it as aji later. Is this the correct decision?
is the net the proper move, or could I tenuki?
is this move too slow? Or rather, not doing enough. Either C15 to enclose the corner completely or D10, C10?
is overplay and rightly punished. Shame on me. No question, just a mention. The moves following that are an attempt to make something of the mistake, but I see quickly it doesn't work. And so I make a solid wall with...
Is this too heavy? Play a lighter shape?
what is the best move here? How to catch this cutting stone?
Proper timing? Or extend once more to K8?

Thank you!

I give up my stone in the right upper corner for now, I might use it as aji later. Is this the correct decision?
-- yes
is the net the proper move, or could I tenuki?
-- can catch on a larger scale; after the net, the one space jump to the left feels close to the strong group
is this move too slow? Or rather, not doing enough. Either C15 to enclose the corner completely or D10, C10?
-- a bit unbalanced, I would play bigger on the left side
is overplay and rightly punished. Shame on me. No question, just a mention. The moves following that are an attempt to make something of the mistake, but I see quickly it doesn't work. And so I make a solid wall with...
Is this too heavy? Play a lighter shape?
-- no it's ok
what is the best move here? How to catch this cutting stone?

-- extend your weak stone upward

Proper timing? Or extend once more to K8?

-- extend once more: you can still cut off those 2 stones later

Thank you!

Several comments. No guarantees.



Edit: Added some clarifying branches to the variation at .