$1911

I want to do a keychains for a big alpha pattern and i don't know how to start and finish them..! :( I know that i can do a loop but i have too much strings to do that.. Please help me...

You generally have to have a loop to do a keychain. Have you already cut the string?
If not, double the length for each string (for example, cut six inches for two 3 inches of string, but keep them together), double it over, and do a lark's head knot on a keychain loop.
That's how alphas are attached to keychains

OMG!! That's what i'm talking about!! It's this kind of loop that i'm looking for! The "loop" that i don't want to do is the loop are making with knot... i don't know if you understand what i mean.. Its a basic bracelet that we turn to do a loop.. Never mind, thank you so much :)

Lark's head knot?

Yes, i will do a lark's head knot but i din't know the name and everybody explain the other way.. (sorry for my english.. i'm very bad..!)

That's what I've seen most people do for keychains. Unless I'm misunderstanding what you are saying.