First, congratulations on the weight loss.
Second, I believe that once you start filling out your recently-slimmed-down frame with some muscle, that little belly and the extra skin will become less apparent. Lift some heavy things, eat some steak and vegetables, and repeat that for awhile. You don't have to gain a ton of weight, nor do you expect it to happen overnight. Most people underestimate the effect that gaining 10 pounds of quality mass will have on their physique. Look at the long game.
Do you have a plan for weight training? I suggest setting a few strength goals and then getting on a plan that moves you toward those goals. Perhaps you want to improve your max number of pull-ups, or your deadlift, etc. Choose a couple key indicators to help gauge progress.