Skin after losing weight...questions???

I have and always have had large arms (16inches right now) but even when I was at lower weight they were big so I knoe there won't be any miracles but I'm just wondering if anyone with a similar starting measurement has lost weight and not had major flabby skin issuses with their arms...my arms have had small stretch marks on them since I was about eight and are flabby underneath but the outside you can feel the muscle like all the fat fell down or something...lol I'm 25 and I'm putting baby oil on after showers then and vitamin e oil, cocoa butter and olive oil butter on atleast twice a day and making sure I'm getting arm work iearn everyday...is there anything else I should be doing to help try to tighten theare area?Any advie welc I havent been able to w short sleeves ifor well over a decade..