Work on that dream recall first. I always say to new lucid dreamers, remember to do as many reality checks as possible. But what's more important is to consider the nature of the RC action you performed. In essence you are trying to achieve is the mindset of questioning yourself about the reality of the world you are in.

For example, you do the 'jump into the air hoping to fly technique' , what makes you think it is a dream, what makes you think it isn't? Well, there's gravity so even if you jumped a tiny bit higher than expected you can be sure that you are in a dream. There's the sound of your feet landing on the ground if you do fall back down. What does it sound like precisely? Is it a thud, a tap, an earthquake!? These things aren't consistent at times in dreams.

Learn to think about or notice these little details and they will get carried forward into your next lucid experience.