Sinter a sputtering target from this powder and deposit a thin film by magnetron sputtering. Must be e.g. F doped for decent conductivity. Alternative technologies make use of gasses or wet chemustry (AP-CVD resp. spray-pyrolisis) for depositing such thin films.
I wouldn't even try doing this but would buy in ITO coated glass from companies such as Balzers. These coated glass plates are made by magnetron sputtering
In the past people have tried spraying SnCl2 solutions onto red-hot glass with limited success.
Tin dioxide on its own is not a transparent conducting oxide. It is a large band gap semiconductor. However, F-doped SnO2 (FTO) is a transparent conducting oxide. It is easier to prepare thin films on surfaces by spray pyrolysis and best if the spray solution contains precursors rather than readymade FTO. Read our papers on atomized spray pyrolysis for making FTO nanotube Thin films.
It will be difficult to convert SnO2 powder in to a Transparent Conductive Oxide (TCO) on glass. Besides, it will have to be doped by fluorine to make it conductive. It will be a better option to start with Sn and F precursors in solution form.