You can use createBlip or createBlipAttachedTo.
local blipID = 45 -- The blip ID, 45 = t-shirt.
function createSkinShops ( )
for index, shop in pairs ( shops ) do
local x, y, z, int, dim = shop.x, shop.y, shop.z, shop.int, shop.dim
marker = createMarker ( x, y, z, "cylinder", 1.5, 255, 255, 0, 170 )
setElementInterior ( marker, int )
setElementDimension ( marker, dim )
createBlipAttachedTo ( marker, blipID )
addEventHandler ( "onMarkerHit", marker, enteredShop )
end
end
addEventHandler ( "onResourceStart", resourceRoot, createSkinShops )