I would add on topical sunblock as a last step after your moisturiser. This is important as UV can worsen the darkening and collagen loss from your injured skin.
Use a good sunblock after you have adequately moisturized the area, and top up the sunscreen every few hours in the day. The vitamin E oil should help with that, but please make sure that it is suitable for wounds that are still healing. Also ensure that you moisturize the skin well at night before sleeping.
You will need to be patient with managing your scar. It looks like a recent episode, and there is little else to be done in the next 8-12 weeks except good skincare.
You should also consider consulting a plastic surgeon, dermatologist or aesthetic doctor to reassure yourself and start understanding some possible treatment options in the future.