Advice about J. Maple, please!

Beginner in need of help!
Reading Suthin's thread "maple, maple and maple" I admire his/her excellent work like many of us IBCers do.
Since I have got a small grafted japanese maple seedling (the "Wendy" variety) 3 years old (as the nursery man told me) I would like to ask your advice on how to proceed in order to get a healthy grown up plant.
I do understand the method of ground layering using the wire tourniquet for developing a better nebari and I do understand that growth should be let urestricted for developing the branches, BUT.... I do hesitate upon starting any work on it. If I let the branches grow free what about the long internodes, I wonder....
I would feel a lot "safer" if you could kindly give me some points you believe are important, in form of a list a), b), c)...., so that I have a kind of "compass" to walk with

Hoping that I do not boldly lade on your kindness.....

Like all trees they take time to develop. Maples sprout really well after a trunk chop. I wouldn't worry about branches for several years, develop the trunk first. You may not even have to do the ground layer if you let it grow freely. When the trunk and nebari are satisfactory then you can chop it, above the graft if any, and develop a new leader when the new growth comes. As for the long internodes, on my J maples I wire all shoots the second year with 3 dimensional bends to eliminate the straight long look.

Thank you bisjoe for responding!
Will you please provide some clarification about

bisjoe wrote:... ...I wire all shoots the second year with 3 dimensional bends to eliminate the straight long look.

I'm afraid I cannot understand clearly what you are describing.... Perhaps it is bending the branches in form of "S" ?
Thank you!

Could anyone else kindly clarify these 3 dimensional bends to me?
Thank you!

...probably bended like a roller coaster track, no matter which angle you look at, no straight line (branch) will appear. no 2D all 3D.

my nellie wrote:Could anyone else kindly clarify these 3 dimensional bends to me?
Thank you!

Hi Nellie...layering your branches when look on top should not be on align as much as possible,so when you lookat the front view,all your leayerd branches must have that 3 Dimension or 2D front and back dimension,hope i explain it properly.if it looks improper you still can redesign again.health first before drastic wiring for me in trees...

Regards & enjoy
Alex

Dear friends, Jun and Alex, Thank you very much for responding!
Having also read the simplified explanation of dear Khaimraj here at this thread, I am now sure what the 3dimensional bends are
So, for now I focus on growing a healthy plant with a good trunk.
Thank you all!