For 20% off you have to purchase from your BASKET not the buy it now tab to get the discount add ANY 2 to your basket for 15% off
For 25% off add ANY 3 or more from your basket and the discount will be automatically applied
If you purchase them separately you won't be able to get the discount if you have purchased separately you can ask me to cancel and then purchase again or order again via the basket and then ask for me to cancel original order
If you would like any different combinations please contact me.