Need help assembling a sofa and corner unit in living room

Hi there, I just bought a new sofa and a small corner unit for the living room and could use a hand with the assembly. I have the Allen key and all screws, but I could use a second set of eyes to ensure everything is aligned and securely fixed. The sofa is modular and the corner unit needs to be attached to the wall for safety. I’d prefer a tidy, careful job with minimal tool noise and clean finish. If you have experience with flat-pack furniture and can advise on best placement, that would be great. Please bring a cordless drill if possible and check that all parts are present before starting.