No no no, step away from that style!
as others have said, you are a bootiful lady and should make the most of your features. If you want a change, and to make your face thinner i seriously suggest going short. by doing this you can create volume on top, with the short layers and some product making it easy for you to blow dry the curl out.. and if not invest in some really small straightners, with the very small plates. Have your hair cut into the neck short, so that you only have to bother with the top, and have a beautiful sweeping fringe, leaving it longer by the ears.. and if its a reddy tone you like, i suggest a loreal ( i doubt they use this at the college, more like wella or indola) but a 5.25 would be nice a deep browny red,..or a colour like this.. in this style as described above but shorter at the back.
the cut and height will enlongate your face, and from the one picture my comp will show me, you seem to have a nice skin tone that will compliment the right red tone.
red easily fades, however is also the strongest colour pigment to remove, so think it through carefully. It'l need recolouring deffinatly atleast once a month, but you may find it difficult to go lighter should you chose to in the future.
I think this would suit you lovley. In my experiance.
and if you hate it, it took me 9 months to grow my shaved bob out and is currently a bit longer than shoulder length, and thats with my hair in bad condition due to over styling, so it wouldnt take you super long.
xxxxxx