The only gaps in evolution are either waiting to be filled, or made by yourself. As I said, it's impossible to find a picture of every single moment in your life, but we can decided what you looked like and how you changed over the years using the pictures we do have. Sure, it might not be exact, but chances are you won't have been a green tentacled monster in-between 2 pictures.
Watch the vid in my 1st posts, really, it explains evolution and the creation of the universe in not necessarily a simple way, but a rather complete and very efficient way.
Also, there will never be definite evidence for everything, but there is practically no evidence for God, whilst evolution can be observed and there is a lot of evidence all hinting in the same direction. There are numerous branches of science focussing on evolution alone, and have rarely found anything which contradicts the theory, and if it does, the paradox is usually easily solved, and the theory becomes more refined and more detailed. That's the cool thing about science, it's not stationary, it changes and becomes more detailed and more exact as more evidence is found.
Like, for example, all the apes which evolved from our common ancestor have 48 chromosomes (24 pairs), whilst we humans have 23 pair. This was used as an argument by creationists that we could not have had a common ancestor (they tend to use everything science does not have an answer for yet, and are usually proven wrong, I can give you numerous examples). But, surprise surprise, evolutionists theorised that there must have been a fused chromosome. And guess what, they found it, chromosome number 2.