Not bad for a beginner. You did better then I would have. You did a much better job on the base then you did on the figures.
Well, since you are new let me introduce you to a few basic techniques you should familiarize yourself with.
The main one would be seam filling. A seam is formed during construction when you place two halves of the kit together, there is no getting away with it. I have this kit and the seams are a terror on it.
There are a few ways to get rid of seams, I prefer mixing the two best methods.
~The first thing you do is you glue the parts together, do not use A LOT of glue, just a small line along the edge should work, you do not want the glue overflowing out of the seam onto the kit.
http://www.scalehobbyist.com/catagories/Paint_and_Construction/TES00003501/product.php?s=4&t=2&u=0
~wipe any over excess away with a paper towel or tissue, do not SMEAR it over the details.
~when the glue dries you take a highish grit sand paper (not low enough grit that you could sand wood with it) you sand over the seam where the glue was put and sand down any of the glue that came out until that area is smoothed.
~once you have finished Sanding you should take a Spray Primer and spray it, from at least a foot away (don't put it up against the kit or anywhere close to it, also do this outside or somewhere with a window open and a fan pulling the fumes out). Put a thin coat over the kit, specifically the seam you had just glued. Doing this will show you CLEARLY where gaps and seams are left. http://www.scalehobbyist.com/catagories/Paint_and_Construction/TES00028138/product.php?s=3&t=1&u=0&micr=216&pg=1&ppp=24&sb=stocknumber&so=a
~now that you can see what parts of the seams are left you take some putty and, using an exacto knife, you spread it over JUST THE SEAM and ONLY where you can see a gap. Make sure the putty goes into the seam a bit.
http://www.scalehobbyist.com/catagories/Paint_and_Construction/SQP00010003/product.php?s=4&t=2&u=1
~LET THE PUTTY DRY OVERNIGHT or at least for a few hours
~once the putty has dried take some junky sand paper (because it will ruin it) and you sand the putty down until you can see the plastic. This will remove all of the putty except that which is in the seam you are attempting to fill.
~wipe the seam down with a wet paper towl just to get rid of any 'saw dust' from the putty.
~re-prime the seam that you have just puttied and sanded.
~Check for any gaps or seams still showing, if there are, repeat the putty process.
I know that seems like a LOT but once you do it a few times it will become second nature and go by quickly.
Now you might ask, what is the difference, or does this look that much better?
Well, here is an example (I have no idea who these photos belong to, I went to google)
This is a kit with seam lines NOT fixed.
This is an example of a kit who has had the seams fixed but did not do a good job of it. Looking closley you can see the seams are still there in spots where they can be seen and a few spots where the glue was not sanded off (around the ankle)
This is, well, stacking the deck. This is what a kit can look like when everything is done perfectly.
Now with all of that basically, that is one of the simplest things you need to learn to do if you want to improve in your model building. Even the most beautiful paint job will be subpar with seams showing.
Any questions just ask!