RMP: Rate My Physique… The first thread contains certain guidelines to follow when posting in RMP such as different “required” pictures to receive advice ect.
Most important= Front double bicep pose, Back double bicep pose, and a shot of the legs, lat spreads, most muscular man, ect are helpful as well.
You are pretty lean, but at 5’8 140 that would be expected, What is your diet like? and what kid of lifting program are you on. An easy way to “bulk” is by taking your body weight X 19 as a base for the amount of calories you should be eating in a day. Also you should be taking in around 1.5g of protein X bodyweight. So in your case 210, but you could even go as far as 2 X bodyweight and some advanced lifters do 2.5.