How do I do the Overlay / Sequence Shots in P...

1. Open that image in photoshop.

2. Open the second image, go select all, copy the photo

3. Switch back to the original image, (control-shift-tab), and paste the 2nd photo on top of the first

4. Select all again, and then go to layer, layer mask, reveal all.

5. Set your color selections to black on top, and white on bottom. How
this process works is that using the paint brush with black as the
color ‘reveals’ what is under the top layer (use to reveal you in the
original frame), while white "paints in" the top layer more. Use the
white tool if you accidentally reveal the bottom layer over your 2nd
image.
Tazo

How should I sharpen my pictures?

Well, if I can give you one bit of advice, it’s that you should never use the ‘Sharpen filter’

It’s not controllable and isn’t generally ’smart’ on what it sharpens.

Learning how to build edge masks is not that difficult, but takes a lot
of explaining so you’re better to read something like this:

http://www.luminous-landscape.com/tutorials/smart_sharp.shtml

And this is an excellent overview of sharpening to
web/prints/whatever which serves as a good starting point in developing
your own tailored sharpening workflow:

http://www.creativepro.com/story/feature/20357.html

Leeroy

What is a free RAW converter you recommend?

Pixmantec: RawShooter Essentials (RSE) 2005 available for download from their website

http://www.pixmantec.com/index2.html

One of the best free RAW convertors I have used to date. I plan on paying for the PRO version when it comes out.