FYI I edtied your first post to embed the pictures to the site, no need for links any more.
We all love Takaya's work, but don't become too obsessed with matching his artwork line for line. You end up getting more focused on that than you do your character and it hurts the end result. Like Matt said, take risks and go with it. In the end what is the focus you want for your character should come first, then design and play with the look after.
The cool thing about art on a PC is the ability to change and layer items. Where I grew the most with my ability to change and draw on the PC was when I stopped using Guyver art work and modifying it (my first WG picture is litrally that it's a combo of offical work modifed and recoloured) to where I was about to take a Street Fighter image and then draw Guyver armour over it to make the characters I wanted. It gives you a far greater range then to draw things at different angles.
This is the same advise I give people painting minuatues for the first time, don't look at art as a failure if you do something you don't like, everything including failure is helping you towards learning a method to a style you'll like doing. You can always reset or redo a step for different results. (Though for mini painting, that involves terps or met spirts to clean the paint of a mini! Not deleting and adding a new layer) Developing that is probably the most important step you'll ever do.
Get yourself Adobe Potoshop or Manga Studio and just play with it and have fun. You'll be in a far better place than I was 20 years ago with Unlead iPhoto and 1 layer for everything I did!.....
And btw, I liked your first pic in the post more than the later pics, don't be scared in taking that as your starting point and editing in the PC later. There's all sorts of tools to take images and correct the size and parts later.