Quick Answer Key: YES
Yes, you can share any files with us (via Google Drive or Dropbox, or over email). As part of the onboarding process we ask for any assets you might have (logo, brand colours, images). We'll use these to create original graphics, following your preferences.
For ongoing content requests or ideas we ask them be sent to your Social Media Manager by the 10th of each month. This ensures our team has enough time to review and implement them into your upcoming content.