I'm 23 years old and have always been under weight, I have been working out for a few months now and have already seen improvement. I have put on weight and only need 4 more pounds to be at perfect weight going on some of the tables and graphs I have found online

The main thing I'm into is working on abs, I can feel all 6 now and also see them when I tense, but I want to see all of them without tensing so to me I still have a bit of fat to loose on tummy?
I'll get some photo's up in a sec so you can see and maybe help me out.
Cheers and hello again
