Without seeing pre-op and post-op photos or knowing how many days post-op you are, it is difficult to say whether or not your upper blepharoplasty surgery was too aggressive.
One important thing plastic surgeon's look for in the early post operative period is whether or not the patient can fully close their lids over their eyeball. Inability to do so is medically termed lagopthalmos (inability to fully close your eyelid over your eyeball) and is not uncommon in the first few days post-operatively, due to the local anaesthetic used and swelling of the tissue. If the inability to close your eyelids over your eyeball persists beyond the first few days post-operatively, it is of concern; the biggest concern is protection of the cornea.
I recommend you bring this concern to you Plastic Surgeon and inquire about what interventions you can use to ensure that your eyeball (cornea) is protected and properly lubricated when you are at rest/sleeping.
Wishing you complete recovery.