It's a String Thing Valentine Challenge 229 by
Adele Bruno.  String by Adele, patterns: Olluan
by Tina Hunziker, Caught by Christine Reyes
and Tipple by Rick Roberts and Maria Thomas.

It's a String Thing Challenge 183 by Adele Bruno
String by Adele.  Patterns used Zenith by Zentangle
Original and Caught by Christine Reyes