Try to be a know-it-all. But don't try to *show* that you are a know-it-all.

Try to be a do-it-all (at your own risk). And show that you can be a do-it-all.

Be very very very careful in all environments except dev env. Actually try weird stuff in the dev env!

Asking for help is an art on timing (how much have you tried on your own before asking your seniors) and communication. (how clearly you can convey what you've tried)