I don't feel comfortable doing anything
that requires a physician's order without that order, and the facilities in which I've worked don't permit that, anyway. It's been a long time since I've worked anywhere that one could get away with doing stuff like that -- i.e., computerized systems for entering orders that would require you to lie
about having a physician's order in order to enter the order into the system, pharmacy systems that require you to scan the actual written physician's med order to the pharmacy, etc.
"I don't think I'm too bad" is a justification/rationale that makes me v. uncomfortable. I'm not saying this as a personal criticism of you, or anything, but I'm shooting for a higher professional standard than "not too bad."
IMO, if people want to be able to order meds, procedures, etc. (outside of established, legitimate facility protocols, standing orders, etc.), there are educational/professional pathways to legitimately accomplish that -- pursue an advanced practice role that suits you. Otherwise, you are ultimately taking chances with your license. If a situation goes bad and comes back to bite you (even if it's just a matter of a physician taking offense and complaining), you won't have a leg to stand on -- is that a risk you want to take?
However, I'm v. "old school" when it comes to scope of practice, and I'm sure I'll turn out to be in the minority on this question (as I so often do on this site).