mme3924 - it sounds like you are doing fine.
If you can make a man's suit, I would think you could piece any quilt block.
If the blocks are turning out to be the size you want them to be, don't fret about it!
It appears to me that quilting projects can vary from quite simple to extremely complex. It does make sense to me that one would have better results with a complex project if one's simpler ones are turning out 'as expected.'