I'm with Anael your blocks don't have to be historic - and ultimately its your quilt you get to decide what it looks like & if you don't like something, don't do it! I have never discovered quilter's cache but now I've seen it... oh my... could lose hours looking through all those patterns.
The 'children take wing' block is really nice but to me looks pretty similar to one of the ones we've previously done... can't remember the number, the pine burr one? But again... do what you want to do! Isn't the beauty of a project like this that we are all working on the same thing but will all have completely different looking quilts at the end of it?!