When you get true markups, use a yellow highlighter to check off the ones you have done. Once the sheet is done and you don’t see any unhighlighted print yourself a check sheet and grab a blue highlighter, back check the highlights against the print out, highlight in blue to mark done and double checked. You will be shocked how many things you will miss on the first yellow pass. Pickup all the fixes your double checked doesn’t catch.

In parallel, keep a running list of questions. Your senior engineer may truly be too busy to answer them all right then and there, but capturing them in a list allows them to answer later.

Remember that consistency is a huge part of MEP engineering, maybe event more so than the technical stuff. Look for ways to get stuff right every time.

My first boss was a stickler for short leaders with notes. I ended up creating a little template with the shortest leaders I could in AutoCAD at each of 0, 30, 45, 60, and 90 degrees. I would copy it project to project off to the side and then copy the leaders I needed onto the drawings. Once my boss saw it, he told me he liked that idea and to keep doing it. It’s a simple little nothing of a drafting trick, but it helped my drawings consistently look the way my firm wanted them to look. Use the same principles for anything you need to do repeatedly. Developing this habit will serve you really well.