Looks good! The only weird thing is that the black line separating the rudder from the fixed part of the vertical stabilizier appears to disappear (sorry, unintentional pun) halfway down.
Next, I happened to stumble upon a good schematic for one of the variants of what is probably now the least represented of the classic jetliners: The 707.
the schematic in question depicted a -320C, so from that, through some various sources obtained from google and from modelist forums (beign boats or planes those guys really strive for accurancy, you can fin much interesting stuff) I was able to get the whole series: 707-320, -320B, -320Badvanced, -320C and pure cargo -320C.
My apologies to Guillermo2312, who originally did a 707-320B (which technically it is actually a C)
and a 707-420 for FD, if he is still reading us. His drawings were so different from the schematics that it was way easier and quicker to start from scratch.
Regarding the drawing, I'm not completely satisfied with the double black lines that appears were the wing leading edge pixels intersect the ones for the engine pylons, but I don't know how to amend such thing unless I disregard completely the actual shape of the engine pylons and modify them so much that they will look nothing like they should.
The apparent lack of part of the nose gear doors on some version is not an error, their design was revised on the -320C (and thus applied on the -320Badvanced as well, which was introduced later).
The slight difference in the wingtips reflects the fact that the original 707-320 had rather blunt tips (like all previous models), the 707-320B introduced flared ones.
-outdated, please refer to this post
I'll Look for sources or schemathics of the Conway-508 turbofans, in that case I'll might try to craft the 707-420 as well.
Previous versions (707-120/-120B/138/138B/220 and 720/720B) might take much longer to surface since a whole lot of new sources and schematics (especially for the wing) would be needed.