Hi Stacy !
thank you for your kindness ! I don't have the occasion to speak or write english daily, so it becomes more and more difficult for me to do it ! My husband who is a french canadian is bilingual and I think that I'm going to need his help !!
I'm using a french version of PSE, which is not easy !

Concerning my problem :
The brushes I downloaded yesterday have been saved in the preset manager. So I can select them.
I wanted to put the shapes on the edge, when the LO was practically finished.

I selected the brush tool, choosed the brush, selected the mask mode (I'm not sure it's its name in the english version) and the opacity. I click on each corner of the layer to apply the shape.
But the brush tool keeps on being active. If I click anywhere, the brush shape is already there.
I can't change another part of the LO. I can't save my work with the brushes.

I read in a tutorial that it was better to put the brushes at the beginning of the work. But at this moment, I don't know if I want to use them or where....

I also tried to create an new layer in the layer palette, but it didn't work...

Thanks a lot for your help!
I'm very pleased to have found this website. I'm actually pregnant (our baby girl is waiting for March, 4th) and I spend all my time to explore this site ! I'm crazy about it!

Candice