Hi Ganesh,
I have moved your entry to this forum as you have posted it in the german language CorelDRAW forum initially.
I'm sure you'll get a response from other users regarding your question about using the community site in this forum much quicker.
And - to also reply to the question: You should find your gallery in the "Control Panel" that you can access on the top right of the community site. There's an entry "My Galleries" where you can upload images to your personal gallery.
Best regards,
Klaus.