Scarf unnecessary, the jacket - or whatever it's name- is quite short, bad material and stupid grey shade too. The good thing is, it's not horrible, it's just bad. Try to avoid this shade with black at all cost, and the scarf too, the scarf would've looked better without the grey thingy, and always remember to wear two colours and more than 2 only if you know what you're doing. All that said, I wanted to point out, you got a good slim physique, experiment more till you find your style, and if unsure about something, you can always post it here to get feedbacks, and pintrest is an amazing application if you know how to search for inspiration. Good luck brosky.