over face even though look prominent, heal faster compared to scars over other areas because of very good blood supply to face.
2. Usually wounds over face heal within a week. Since you are pretty sure that it is not infected and it is healing well, nothing has to be done now.
3. Since its already been 25 days, nothing can be done now. You have to accept the cosmetic look of the scar. This could have been better avoided if at all you had sutured the wound initially.
4. If you still not convinced with the look, you can consult a plastic surgeon.