Looks very good. You did a good job in figuring out where the parts go.
I have built a few of those Imagrie D'Epinal models. It is an all out process to first clean up the scans since most have a severe color cast and decide just how the colors should look. Then you need to decide how big to print them since most do not have any indication of the scale. Then as you noted you need to figure out exactly where the various parts that are scattered throughout the sheet go during the construction.
I have tried to transcribe some of the text in order to get a translation to see if there are any good hints as to the steps needed to make the models. I have also tried capturing the areas with the text and saving as a picture to try some OCR. The results have been interesting to say the least.
