While you can use the design tool to create your own one-of-a-kind pieces in the yarn you want, personal patterns made by you using the design tool do not qualify for being added to this source.
This source is only for ready-to-use patterns provided by Dreamknit.
Do not add your own customized patterns to this source which you have created for your own use wit the Dreamknit design tool. These are your personal patterns for your private use since they are not publicly available and therefore do not qualify for being added to the Ravelry pattern database as patterns at all. Add them as your personal project instead.