You can post pictures in [img]...[/img] tags, but they won't be embedded into your posts, only shown as links, as long as your account is of rank "Newbie". And if a higher ranked user quotes your [img]...[/img] images, they will be shown as embedded pictures. So, frankly there's no excuse to not use [img]...[/img] already.

Upload your pictures to https://talkimg.com which is a dedicated image file hosting service for Bitcointalk. You will get there ready-to-copy/paste [img]...[/img] tags of your image uploads.

At least your Google Drive links don't require to be logged in at Google, which would be a privacy nightmare. But I don't like it, because I don't know what happens if someone who is already logged in with his Google account accesses your links. Would they dox themselves to you, meaning would you be able to see which other Google user accessed your Google Drive links?