>>1838161Ribbons can get difficult, especially when there is criss-crossing lines. There are a couple ways you can handle the criss-crossing part. One way is to do it in pieces. Draw separate lines that all meet towards the center. This can make drawing it easier at first, but can later create headaches, since lining up the separate shapes can prove difficult. The other way is to draw it all as one very long shape. This can be quite difficult, since you need to really know where to place nodes and maximize the handle sin said locations. However, it has the benefit of being able to keep the criss-cross part aligned from the original, since it is all one shape. I drew the the ribbon with both options so you can see the differences.
For the normal ribbon shapes, only place nodes at the end points, and at the parts that curve. Get the handles and nodes parallel, and then add a pair of nodes to handle smaller bends. For the knot, I always use stroke/stroke to path since it is best to keep the knot uniform. I tend to to do the knot last so I can figure out the overall thickness that I want for the other ribbon parts, and then match it to the stroke for the knot.
Here is an .ai file to get a closer look at the nodes/handles:
https://mega.nz/#!I8ojAALD!icKcVjvw-OQQnevlGkZUEG2lc44zVmWYCrny2eMr_R8. It should open fine in Inkscape.