When I make my dresses, I usually cannibalize patterns. I have a pattern block and if I don't have a pattern close to what I want I will make one; but I have little patience for it so I prefer to use pieces I have already used that I know will fit with minimal adjustment.
So for the red check I am using the bodice front from Fig Leaf 201. I used this pattern for the blue check homespun. I will use my pieced bodice block for the back as the 201 back is one piece and gathered. I am using Simplicity 1818 for the sleeve; not sure how it will work as I've not used it but the shape is about right and I can adjust it much easier than drafting a whole pattern.
Have everything traced out, now to the mock up.