Zoomed in was definitly the right choice! I also like that Godzilla is only implied, it lends a bit of mystery to the image. we can only guess at it being Godzilla and that makes it much less lazy I like the drawing so far!
One point of feedback, if it might help:
Im wondering if instead of being flat on, the bus could be slightly slanted towards the viewer as if it came to an abrupt stop. It feels weird to me to have this really straight side-on view - we'd have to be so perfectly positioned, and where the babies are so dynamic, the bus is suddenly just very boxy.