Euonymous alatus

Greetings to all bonsai friend , This is a tree that I bought last year from nursery, any suggestion are very welcome

First I'd plant it not quite so deep, so you can see a bit of trunk beneath where all the trunks split.

Secondly, I think I might consider eliminating all (or at least all but one) of the trunks on the right, and concentrate on the single, left-hand trunk for your bonsai.

Have you dug deeper into the soil? The one fat root I see in the last photo is not good. I think you will want to remove one of the two trunks and cut the remaining trunk way back.

Thank you Jim and Billy for your reply .
First thought was to split the trunks in order to make two trees, of course this is something I do not know if he can be on specific species .
Now, regarding the issue with the roots , this is something that concerns me and will deal with this at the spring when i was able to transplant the tree.

Maybe something like that , any other virtuals wanna be most welcome.