how to contact deities?

You could simply pray to them. Talk to them as you would to a parent. It doesn't have to be fancy words, just speak to them naturally and let them know what it is that you wish from them.

I don't know who is goddess Seshat and god Thoth but i will say you from my experience with Aphrodite that it's a lot of work if you want to have a great relationship with a deity...of course if you want a simple contact well a summon spell can help...

Too many people want to jump to a 'summoning spell', a term I dislike for a number of reasons.

I think you have to ensure you have a relationhip in place before you go calling on a deity. Lark is correct, you can pray to them- I find it is good to, at first, visualise the image of the god you wish to communicate with.

Then you ask them if they will consider working with you. peak from the heart, there is no point using a prayer already written down, unless it has deep meaning to you.

Pray from the heart, spontaneously, be truthful and honest. Praying from the heart is important. Praying for the sake of praying is a waste of time. It has to be meaningful.

Then see what occurs.

It's the god's or goddess' choice rather they answer or not.

Most polytheistic practitioners create an altar or at the very least, a shelf in their home that is dedicated to their patron or whatever deity they wish to honor. It's a place to reflect and connect with that deity. After there has been enough energy expended to this special area, it begins to resonate with the spirit of the deity. Is the deity hanging out in your house? No. But it means you've successfully connected to them. You have yourself a direct line. We can't exactly take a photograph of them so this must suffice as the link. It also becomes a sacred place in our homes where we can go to be alone with our spiritual mother or father.

At this point, a bond is created and through meditation, messages can be received in this place. Is it really the deity "talking" to you? Probably not. As we connect, we naturally channel their energy and it begins to flow through us. We learn from it as we open to it. Once in a great while that deity or those that work under them may make contact with you in the form of a vision or dream. If your lucky a physical manifestation like the smell of an herb or flower, a breeze (indoors with all windows closed), a sound, a voice, etc. These are little indications that you are being heard.

At this point, you can ask for requests but never without an offering of your own. Each spirit likes something different. Some like burnt offerings like incense or a specially made candle, others like food offerings, and still others like actions. A deity that is charitable may want you to work at a soup kitchen. That's where being able to connect to innately know these things plays an important role.

Thoth is the Egyption god of wisdom, I think you meant sekmek the lion goddess.

No, Seshat is a separate goddess from Sekhmet.

Seshat is the Egyptian Goddess of arithmetic, writing, and architecture. She is sometimes viewed as the female aspect of Thoth or sometimes as his daughter. You can find a good deal of information about her at http://www.ancientegyptonline.co.uk/seshat.html

Demonguy, if you aren't sure of your facts it is better not to make comments that lead others to the wrong conclusions.

Sorry I never heard of seshat. I know more about Greek and roman deities than I do Egyptian. I just put what I know.

Also I know more about Norse or Germanic gods.