That is adorable.It's a lucky little-one that will get that.
Perhaps this will help. Flying geese are twice as wide as they are high ( 6w x 3h, 4w x 2h, etc. ) if these side patches are 3" sq., the geese must be 3" wide and 1 1/2" high. make the turret 3w by 1 1/2h. and you will have a 3" square patch, half turret and half (geese. . goose?). I hope i have made myself clear and BTW, i am talking finished sizes not cut sizes.

Remember..There are no straight lines in nature...LOL..It looks great...Creative....

Forget the roof work and leave it. It loooks good to me.

It is really cute. she will never notice.

I dont think I would change a thing. Its perfect and wonderful.

Turrets on real castles are not always the same height or size - don't worry about it, just add a few more just like it and no one will notice anything.

I live in a country where we have lots of castles and castle ruins. Yours is perfect. Any imperfection and you can tell he that part of the roof is starting to fall off! :)

Anyway, it's great--just keep going and others have suggested the flags, etc. Great ideas. She will love this!

very cute... pretty fabric

Make random blocks like that one and decorate the short turrets. I think decorative buttons would be nice. It will be original.