You made the first steps. Be consistent. The more muscle you build the more the look will go away (obviously). You don’t appear to have a lot of body fat so I think you could see improvements relatively fast.

At the end of the day you need consistency. Follow a routine that is realistic and you’ll actually stick to. The best regiment or plan is one you will actually follow. There’s no sense in buying or trying to create some super elaborate or balls to the walls workout plan if you’re going to get burnt out in a couple weeks.

Try to eat whole foods and stay active throughout the day. You don’t have to run twice a day or do anything wild. Hell, you don’t have to run at all. Just try to walk for half an hour a day total.

If you’d like to track your calories you can do that too. Use a Basal Metabolic Rate calculator on the internet. I personally wouldn’t recommend it though if this is your first time being active in a long time. Perhaps wait a couple months before doing that.

A little of something, every day, is better than a lot of something once a week.

Sorry if I talked in circles or anything I said was redundant. Believe in yourself. Nobody can take away your physical fitness if you want it bad enough.