The phrase "almost standing" is correct and usable in written English.
It can be used to describe a state that is very close to being upright or in a standing position, but not quite there.
Example: "After a long day of hiking, I was almost standing but my legs felt too weak to support me."
Alternatives: "nearly upright" or "close to standing".
He did not stop until he was almost standing on my toes.
Still fetching me up till I'm almost standing on Ponsford's crease.
The moment was so extraordinary that I felt myself almost standing apart from it.
"Doug, almost standing alone, said, 'This is a great idea,' " making SRI one of the founding nodes in 1969 of what would become the Internet.
At times in the first half they were so deep they were almost standing behind their own goal in among the photographers.
But, for good measure, there were three close fielders on the drive, one on the off and two to leg, one of them almost standing on the cut strip.
Last night, for an almost standing-room only crowd, she performed it, script in hand, for the residents and former residents of 'Capers -- shorthand for the Arthur Capper/Carrollsburg public housing project in Southeast Washington, not far from the proposed major league baseball stadium.
The floor is splattered with globules and rivulets of dried paint; you could almost be standing on an enormous Jackson Pollock.
He is neither a player nor a coach, and yet he is almost always standing behind the head coach, waiting to serve.
It is, in fact, hard to overstate the power that comes with Powell's stratospheric, almost absurd, standing with the American public.
Especially fond of the final scene, he said, "[I]n City Lights just the last scene... I'm not acting.... Almost apologetic, standing outside myself and looking... It's a beautiful scene, beautiful, and because it isn't over-acted".
