Hello Ashton. First, I commend you for trying different approaches, and for producing work, also, for taking my advice on focusing on individual aspects first, so keep it up man. Second, and here is where I'm really honest man, I have to say given your own standards, this was not a successful image.
Now let us analyze why. The first most important aspect of it, is basic draftsmanship skills.
Photobashing is an advanced skill that really requires you to have a thorough understanding of forms, texture, values, etc. If you can produce one good, clean, detailed, hard-surface drawing, complete with hand-painted textures and values, that looks convincing that's when you start experimenting with photobashing and stylization, because it becomes a tool to speed up the process of painting, not a crutch put in place of it. See the warning Coreyatus posted,
"(One word of caution, though--because I started using it as a quick substitute for drawing, my drawing skills plummeted because I wasn't using them. I'm still recovering and struggling to draw human poses and clothing accurately--proportion and fabric folds were the first to fall away... Just a word of caution.)"-Coreyatus
Second, is that the image is not clear. A photobash can be detailed and realistic, but it also needs to still communicate clearly what everything is, in fact, that is the entire purpose of using photobashing, to more quickly and clearly express complicated details that would take too much time to render in a tight turnaround, integrating with an also clear drawing/painting. Right now, the piece looks more like a collage than a cohesive design, which is what you don't usually want from a production photobash. I am also not sure about what most of the hand drawn elements are. I get its some kind of helmet, and a kind of animal head? I get thhat there are some kind of rags too, but it all is rather unclear and flat, and it just doesn't gel with the photorealism (what is the helmet made of? why arent the rags following the forms underneath?)
However, if your example is something you still want to pursue, there are a few, concrete things you should be capable of doing before photobashing. First, understand the human figure (what lies under the clothing), second, be capable of understanding realist rendering (light+texture) third, understanding form and form language and finally, understanding your specific reference, in this case, guns, military equipment, and hard-surface forms . After alllll of that, start playing with style. You put that together, you will be in a much better position to do a successful photobash, and try it again.
Let's start from the beginning. Give me a sheet of 5 hand drawn soldiers from reference, without stylization, just line-art. Try to keep them around an hour each. If this is too difficult, this means we have to scale down and really work on the basic chops. But try to do it, and post the result. I'll be there to provide some feedback if you want. 
