To what end are you performing this cross? Do you plan to see it through to flasking? And are you aware of the costs associated with flasking?

I am hoping you have done some web searching; look for "anatomy of an orchid" and "hand pollination of an orchid" - the information is out there. Looks like there are a couple videos on youtube on pollination. As mentioned, you should learn the process thoroughly, from pollination to blooming hybrid, before getting started. Good luck!