the almonds maybe ground with their skins on, but the pistas need to have their skins removed. Just bunch them in a muslin cloth and rub them and viola no skin!
If time permits roast the seeds slightly; cool them completely then grind and store.
Poppy seeds are tricky to grind - make sure you roast them and then grind them; or better still look for ground poppy seeds in grocery stores.
If it's too time consuming for you, include the skins of the green cardamom - though these fibrous buds don't grind fine and surface up on the palette - in curries ground skins don't stand out, here in a shake they just might to a discerning palette.
Could be made into warm milkshakes or into frozen milk lollies as a teatime nutritious snack. Sweeten with sugar though.
For an additional punch, you may add a dash of cinnamon powder or 1 tsp dried vanilla powder.