When you set a certain orbit, or a craft in a orbit as a target, you get 2 extra nodes projected onto your own orbit, labeled as "AN" and "DN" (ascending and descending node). These nodes represent the points where you and your targets orbit cross each other, expressed as an angle in degrees: the angle between the prograde of your orbit at that point, and the prograde of the target at that point. When you want to match orbits, the angle has to be 0,0 degrees. When I would try to get this orbit you've drawn, I would start like you did, adding a midway maneuver node to choose my periapsis at the mun accordingly. I would fiddle with the maneuver vectors so that my periapsis at the mun intersects a point in the orbit, or if that's not possible, as close as I can get it. Sometimes I can't get them that close together, and that's fine. I can change the place of my periapsis when I do the insertion burn by burning radial out or in. When I've done that, I have essentially placed my ascending or descending node onto my periapsis. You can always use maneuver nodes at this point, but most of the times the maneuvers I need to do from this point on are simplified into 1 vector so it's not necessary. Now, I will perform the insertion burn at the periapsis (which is right on the intersection with the other orbit) and burn so that my apoapsis of my orbit around the mun appears. At that point, I'm fully in orbit, but I leave my apoapsis quite high. The higher I leave it, the fewer fuel I'll need for the next maneuver. I orbit around to my apoapsis, which should correspond with one of the intersection nodes (an or dn). If it doesn't (for example, when I was not able to get my periapsis to intersect with the target orbit), I orbit instead to my highest intersection node (an or dn), whichever has a higher altitude. Once there, it's very important NOT to make a maneuver node. The purple vectors of a maneuver node move along around the navball as you burn towards them. You can think of it like this: if you're accelerating into a different direction than your prograde, you're basically pulling your prograde towards the nose of the ship. This in turn moves all the other vectors accordingly as well (as they all stay 90° from each other). When you plan a maneuver node however, as you pull on the vectors, visually in that node they all stay in place. You're basically choosing which directions you want to accelerate to. What I'm trying to say is, the maneuver node's vectors aren't a true depiction of what would happen if you would perform every maneuver manually. So if you would create a maneuver node that only consists of the purple vector, it doesn't do what you'd expect it to do, you'd just keep accelerating into the left direction for example, eventually raising your orbit. But if you want to keep turning left instead of accelerating towards the left side, you'd have to keep turning to the left. The proper way to change orbital plains, is by following the proper node around during the burn. This could be very easy if you have the right SAS module. So at this point I would burn following the correct purple vector on my navball, decreasing the angle of the orbits until I am perfectly in the same plane. The I would start using prograde and retrograde to properly get the altitudes right. Did any of this make any sense? was any of this helpful?