My problem is I get a white space when I resize my hairs.
You're getting white space because you're creating raster images with a white background/canvas. We can give you specific advice if you tell us
which application you're using. Alternatively: you could follow
SyntaxTerror
's advice -- install Paint.NET and review some of the
tutorials.
The tutorials will show you how to
isolate hair images via careful selection and cropping. This work can sometimes be automated with the Magic Wand tool. You will eventually need to properly
position these elements on your canvas so that each one fits the corresponding part of the head template, and
scale them to account for differences in head shape (between the reference image and the SDT head).
I have Inkscape and the layer display is not working. It used to display the hair and the blank template together, but now the hair covers the template without me being able to see the template itself. I'm not sure what happened and I can't resize the hairs without understanding what the problem is.
You can
adjust the opacity of a layer in Inkscape. After doing so, it should be possible to see the template and your overlying image at the same time.
Please note that work in Inkscape usually involves at least
three layers (template, reference, vectors).
Vector tracing work does not require cropping; we simply ignore any unimportant parts of the reference image instead of cropping them out. We begin by
fitting the reference image onto the template, and
resizing it to match the SDT head. We focus our attention on the hair strands, and we
trace a Bezier curve across each important line that we can find in the source image. After all of the lines have been traced we will see an "outline" or "wireframe" version of the hair. We can then use the Paint Bucket tool to
fill each spaces with the appropriate color. When all of this work is complete, we can hide the Template and Reference layers (leaving only the traced Vectors) and
export our image in PNG format.
If you're trying to fix a JPG file (such as
Officer Misty.jpg) then Inkscape is the wrong tool. Inkscape is useful for
creating new PNG files, or for
editing SVG files. It cannot edit a raster image.