You can make your checklist sound more like someone who is being
friendly, supportive and giving you compliments, rather than like someone
who is nagging you.

For example, "Did you keep to your writing schedule this week?" sounds
a lot like nagging to me!

When I read GTD I decided this:

1. I'll do it.
2. I'll make it easy and fun.
3. I'll do it whether or not it's easy and fun.

Instead of "Did you keep to your writing schedule?", to me it would sound
friendlier if it said "Mark down where you are in your writing schedule."
Even better: "Congratulate yourself on the writing you've
gotten done this week." You could take a minute to think over or look over
the writing you've done and feel good about it, (rather than feeling bad
about what you haven't done,) then move on to the next
item in your checklist.

If it takes you more than a minute or so to figure
out whether you've stuck to your schedule or not, maybe you need a system
that allows you to easily know, at any time through the week, where you
are in relation to your writing schedule.
Prepare during the week: when you do some writing, you can put it in a pile
or something, so that you can immediately see how much you've done.

Why do you need that information about where you are in your
writing schedule? Your checklist could give more specific steps
about what you're supposed to do with the information, e.g.
"reschedule any writing you didn't get to this week": although,
that's not very GTD: you're supposed to just have a list of
writing actions and not have to recopy them just because
they're not done yet.

I don't do a "mind dump". I generally write things down as soon as I
think of them. I usually write them in an appropriate place, so I don't
have to do anything with them at the weekly review. I used to write
them all in a "collection" place and have to recopy them at weekly review.

I organized my weekly review to contain only a small number of essential
steps. I put the most important tasks at the top so that if I don't
finish, at least the most important are done. I cut out time-consuming
steps. Top items are to schedule the next weekly planning session, and to
look at my calendar and set my watch to beep to remind me of appointments.