Hi haleybella,
Welcome to
RP!
I'm more a 'restorer' so I'm not up to date with
pageant photo enhancement/retouching software but Photoshop is definitely an excellent start!!!

.... We have at least one member who does this professionally and she might be able to help you ....
She posted the link to this
site where, after registration, you could download eyelashes brushes ...
I actually created an 'eyelashes brushes set' myself with Photoshop CS (therefore not compatible with
PS previous versions) ... you can see what they look like and download the .zip file
here..
If you are going to use my brushes, you should use them on their own Layers so you can tweak/correct them for size blending, opacity and colour to better adapt them to each picture ....(just ask if you have questions on how to do it...

)
If your
PS version is older than CS, just let me know and I'll send you the lashes on a transparent background in .PSD format so you can create your own brushes from them...
Hope this helps...