Chapter 3 edits, part 2

Skywarp crowed. Hoping to his feet in near boyish glee.

The second sentence is a fragment and should be combined with the first sentence. You're also missing a hyphen and misspelled a word. Change this to "Skywarp crowed, hopping to his feet in near-boyish glee."

Thundercracker asked with a disbelieving half laugh.

Another missing hyphen, change it to "half-laugh".

in all the millions  of years

Extra space in between "millions" and "of".

“I'll lead the group,” Starscream interjected firmly, “and I say this because I have tricks up my sleeve – which I will reveal in due time,” he was not sure what tricks he would have, just that he would come up with something.

This is a run-on sentence. I suggest taking the last part "he was not sure what tricks he would have, just that he would come up with something." and making it its own sentence.

Then formulate another strategy or another idea of how to work around the problems presented.

This should be a question.

“If I can lay out a plan, you can follow them

You mixed singular (plan) and plural (them) here, you should pick one or the other. It should be either "“If I can lay out a plan, you can follow it" or "“If I can lay out plans, you can follow them".

Although, I am still trying to fathom Skywarp's usefulness in this, but I am sure there is more to him than I initially see.”

You missed a key place to say "more than meets the eye" there. ;)

That's it for now!