In general, parents may find it most effective to list out:
1) the specific skill deficits to be addressed,
2) ways in which the skills may be acquired (taught/learned/practiced),
3) measures which will indicate progress or mastery for each skill.
More info at this link to Wrightslaw Game Plan: writing smart IEPs.

You may have read this elsewhere on the forums, but wrightslaw and the book From Emotions to Advocacy are helpful resources, as is NCLD.

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mild perfectionist tendencies
Perfectionistic tendencies may be a sign of developing a fixed mindset rather than a growth mindset. One aspect or application is that gifted kids may stop taking appropriate risks in order to always be "right" or always be "smart" or never be "wrong", and this may work against them. The concept is nicely summarized in these youtube videos:
Ashley Merryman & Po Bronson: The Myth of Praise (link-
)
Teaching a Growth Mindset (link-
)

Parents may wish to read the book Mindset by Carol Dweck for tips on promoting a growth mindset.

Parents may also wish to read up on perfectionism. A book which seems to understand perfectionism very well and which many find supportive is What To Do When Good Enough Isn't Good Enough. Another book you might like is Perfectionism: What's Bad About Being Too Good. While insightful, these are written gently for kids, in a style that is fun and engaging. With any of these books it may be wise for a parent to pre-read and decide if it seems to be a helpful tool to use in guiding their child.

Procrastination may be closely related to perfectionism.

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social skills
Resources such as Gifted Kid's Survival Guide, The Unwritten Rules of Friendship, You are a Social Detective, and social thinking (perspective taking) may be helpful.

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organizational help
This is often termed executive function (EF) skills. NCLD is one source of information on executive function.
NCLD is now Understood.org. Here are two links which may be of interest:
1) [b][i]Understanding Executive Functioning Issues[/i][/b]
2) [b][i]8 Key Executive Functions [/i][/b]- Jan 8, 2013