Friedman's Battleships (the only source for these things) lists BB-57's beam as 108'-2". In our scale this is 216 pixels. The beam of your drawing is off by 3'-6", which isn't a HUGE deal but it's definitely a discrepancy. When scaling your plan views you should account for both beam and overall length (if you don't already). It's not up to me to decide if the plan view is inaccurate because of this discrepancy or not.
Additionally, the drawing you've based this work on is the Alan Raven drawing of BB-57 in 1945 available (also) in Friedman's Battleships. If I were you, I would just update the fire control to the Mark 8 on the original drawing and relabel this as "BB-57 1945" (obviously pick a month for clarity).
Alan Raven's drawings (while generally fine) do have errors and need to be checked. The drawings in Friedman's by A.D. Baker III are almost flawless and I don't think I've ever found an issue with one of them before, so just something to think about. Raven did the majority of the illustrations though unfortunately so additional checking is required.
Either way, the current depiction is not accurate for 1942 just because of the medium AA fit and the whip antennas everywhere - I haven't had a chance to review the BB-57 1942 configuration in any great depth but just from the surface this drawing would best be re-labelled as "1945".