Blisters on my upper eye lid?

Incomplete info. This can be very benign to something serious, but not enough info given. Not all "blisters" on lids are equal.
Multiple causes. Most common is eczema, an atopic skin condition. Next is contact dermatitis or allergy to a medicine or something that has touched the eyelids. People with severe acne sometimes get blisters on eyelids. In babies and children primary herpes simplex is common cause. Must see an ophthalmologist or a dermatologist for proper diagnosis and therapy. Treatment varies with cause.