Usually with alphas the designer has made the letters all the same size. If you need them smaller than the original size, place all the letters on your layout, spelling out the title, and line them up as you wish (if you want them overlapping, do that, or use the align tool in your program to line them up however you want them). Then select ALL the letters (and punctuation if necessary) of the title and transform them as a group to the desired size. Depending on what program you use, you may have to link the various layers of the title to get them to transform as a group.
You can apply a particular shadow style to the whole group at once if they're all selected, or apply to one letter and adjust to suit your layout, then copy the style and apply it to all the letters. It's helpful to group the title into it's own layer set or group to help you accomplish these steps and keep the layer panel uncluttered.
If there's some consideration I've missed, reply back and I or someone else will help you figure it out.