If I get Botox for my crows feet, will it change the look of my face? Will I still be able to squint?

Injecting Botox to the crows feet will not change the look to your face, it would only eliminate fine lines/wrinkles 

The lateral periorbital rhytids/crow's feet area is one that even with Botox treatment looks very natural.  Most untrained observers will not be able to pick out that the area was treated.  Also, the dosage can be titrated to allow softening without completely eliminating the lines.  

Botox treatment of lines around your eyes should not change the appearance of your face. You will still be able to express yourself and your look should not change. The lines around your eyes, though, should be softened following an appropriate Botox treatment. I hope this information is helpful.Stephen Weber MD, FACSDenver Facial Plastic Surgeon