Two things have been consistent; my fonts and my colour scheme.
I've gone through and redone my logos and images to make them more crisp. Although I did pay someone to professionally design my header and business cards, they're a little tooo fussy for me and I've been resisting changing them because I paid for the work!
Now, both of my shops have the same running 'theme' and crisp easy feel and I'm much more comfortable with them!
Although I love my shop name, Glitter and Gratitude, I know it doesn't really express what's in my shop, which is why I've been moving towards using GG Apothecary.
My sewing shop will follow the same feel with a little heavier of a font to make using it on fabric labels and embroidery a little easier.