Of course. Emma Watson want's to feel your hands on her girlcock.

"Okay..."

You guide Emma's own hands and put them to the celebrities throbbing cock. She gasps, as she can feel the touch and pressure on her shaft.

"Can you feel how hard it is?"

"Wow, yes, i can feel it. It's rock hard. It also feels so warm. I still can't believe it. I have my very own cock!"

Without waiting long, you start to make her hands move up and down along her length, and Emma immediately starts to moan.

"Now this is how you start. Nice and slow. Move your hands up and down, stroke your cock slowly."

Several moans escape the celebrities lips, and before you know it Emma's hands move on their own, even without your guidance. You can't help but marvel at this erotic sight, the beautiful actress finding pleasure with both of you stroking her huge girlcock, glistening wet with the precum that is spread around by your motions.

"And Emma, does it feel good?"

"Oh god, Emily, yes! It feels so good. So fucking good!"

Although you continue at this slow pace for a while, Emma's breathing quickens, and her moans become even more frequent.

"Now that you know the basics, I think its time for the next step. Do you want to experience your first orgasm as a dickgirl, Emma? Do you want to cum from your big, thick cock?"

Without waiting for an answer, you increase the pace.

"Yes! I want to cum, Emily!" Emma immediately follows your example, and speeds up her strokes as well. Soon she is puffing heavily.

Her engorged member has a deep shade of red by now, there isn't a spot that isn't covered in her precum, as four hands are easily gliding up and down all over it's length. It feels so hard, and so incredibly hot to the touch, and you are sure that Emma will be taken over the edge any moment.

"Oh my god."

"Are you close?"

"Hmmmm!

Emma's moans turn you on and motivate your further.

"Do you want to cum?"

"Ahhh, yes, Emily!"

Encouraged by the calling of your name, you continue. Faster, harder.

"Please, Emily, let me cum!"

You both stroke feverishly, but even under your expert guidance, despite your combined efforts, Emma just won't go over the edge.
And you can feel how the strength in your arms slowly grows weaker, you won't be able to keep up this pace for long. Something seems to be missing.