<div class="slds-grid slds-wrap">
<div class="slds-size_2-of-8">
    <!-- left blank intentionally -->

</div>
<div class="slds-size_3-of-8">
    <!-- form stuff -->

</div>

<div class="slds-size_3-of-8">
        <lightning:fileCard
                            fileId="{!v.rxImage.ContentDocumentId}"
                            description="{!v.rxImage.ContentDocument.Title}"
                            />
</div>
</div>